The crystal structure described by Na7Ba3Ti3Nb7O30 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are seven inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(21), one O(24), one O(26), one O(30), two equivalent O(1), two equivalent O(10), two equivalent O(20), and two equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Ba(1)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. In the second Na site, Na(2) is bonded to one O(22), one O(23), one O(27), one O(28), two equivalent O(11), two equivalent O(6), two equivalent O(7), and two equivalent O(9) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the third Na site, Na(3) is bonded to one O(22), one O(23), one O(27), one O(28), two equivalent O(14), two equivalent O(17), two equivalent O(6), and two equivalent O(7) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Na(2)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the fourth Na site, Na(4) is bonded to one O(23), one O(25), one O(28), one O(29), two equivalent O(11), two equivalent O(12), two equivalent O(16), and two equivalent O(8) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with four equivalent Na(6)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the fifth Na site, Na(5) is bonded to one O(25), one O(26), one O(29), one O(30), two equivalent O(13), two equivalent O(15), two equivalent O(16), and two equivalent O(18) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. In the sixth Na site, Na(6) is bonded to one O(23), one O(25), one O(28), one O(29), two equivalent O(12), two equivalent O(17), two equivalent O(19), and two equivalent O(8) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with four equivalent Na(4)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the seventh Na site, Na(7) is bonded to one O(25), one O(26), one O(29), one O(30), two equivalent O(13), two equivalent O(15), two equivalent O(19), and two equivalent O(20) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Na(5)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(21), one O(24), one O(26), one O(30), two equivalent O(1), two equivalent O(18), two equivalent O(3), and two equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Na(1)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(21), one O(22), one O(24), one O(27), two equivalent O(2), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(3)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, and faces with two equivalent Nb(1)O6 octahedra. In the third Ba site, Ba(3) is bonded to one O(21), one O(22), one O(24), one O(27), two equivalent O(10), two equivalent O(14), two equivalent O(2), and two equivalent O(5) atoms to form BaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, and faces with two equivalent Nb(1)O6 octahedra. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(10), one O(2), one O(4), and two equivalent O(21) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Nb(6)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second Ti site, Ti(2) is bonded to one O(14), one O(2), one O(7), one O(9), and two equivalent O(22) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Nb(1)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the third Ti site, Ti(3) is bonded to one O(10), one O(3), one O(4), one O(5), and two equivalent O(24) atoms to form TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(7)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are seven inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(14), one O(5), one O(6), one O(9), and two equivalent O(27) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Nb(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Nb(1)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Nb site, Nb(2) is bonded to one O(11), one O(17), one O(7), one O(8), and two equivalent O(23) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent Nb(5)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, and faces with two equivalent Na(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the third Nb site, Nb(3) is bonded to one O(12), one O(13), one O(16), one O(19), and two equivalent O(29) atoms to form NbO6 octahedra that share  a cornercorner with one Nb(5)O6 octahedra,  a cornercorner with one Nb(7)O6 octahedra, corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 octahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, and faces with two equivalent Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the fourth Nb site, Nb(4) is bonded to one O(15), one O(16), one O(19), one O(8), and two equivalent O(25) atoms to form NbO6 octahedra that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Nb(6)O6 octahedra, corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 octahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, and faces with two equivalent Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the fifth Nb site, Nb(5) is bonded to one O(11), one O(12), one O(17), one O(6), and two equivalent O(28) atoms to form NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(3)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent Nb(5)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, and faces with two equivalent Na(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the sixth Nb site, Nb(6) is bonded to one O(1), one O(15), one O(18), one O(20), and two equivalent O(26) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra, corners with two equivalent Nb(6)O6 octahedra, corners with two equivalent Nb(7)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the seventh Nb site, Nb(7) is bonded to one O(13), one O(18), one O(20), one O(3), and two equivalent O(30) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Nb(3)O6 octahedra, corners with two equivalent Nb(6)O6 octahedra, corners with two equivalent Nb(7)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Ba(1), one Ti(1), and one Nb(6) atom. In the second O site, O(2) is bonded to two equivalent Ba(2), two equivalent Ba(3), one Ti(1), and one Ti(2) atom to form distorted OBa4Ti2 octahedra that share corners with two equivalent O(4)Ba4Ti2 octahedra, corners with four equivalent O(5)Ba4TiNb octahedra, edges with two equivalent O(2)Ba4Ti2 octahedra, edges with two equivalent O(5)Ba4TiNb octahedra,  a faceface with one O(4)Ba4Ti2 octahedra, and faces with two equivalent O(21)Ba3NaTi2 octahedra. The corner-sharing octahedral tilt angles range from 2-59°. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Ba(1), one Ti(3), and one Nb(7) atom. In the fourth O site, O(4) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Ti(1), and one Ti(3) atom to form distorted OBa4Ti2 octahedra that share corners with two equivalent O(2)Ba4Ti2 octahedra, corners with two equivalent O(5)Ba4TiNb octahedra, edges with two equivalent O(4)Ba4Ti2 octahedra,  a faceface with one O(2)Ba4Ti2 octahedra,  a faceface with one O(5)Ba4TiNb octahedra, and faces with two equivalent O(21)Ba3NaTi2 octahedra. The corner-sharing octahedral tilt angles range from 59-60°. In the fifth O site, O(5) is bonded to two equivalent Ba(2), two equivalent Ba(3), one Ti(3), and one Nb(1) atom to form distorted OBa4TiNb octahedra that share corners with two equivalent O(4)Ba4Ti2 octahedra, corners with four equivalent O(21)Ba3NaTi2 octahedra, corners with four equivalent O(2)Ba4Ti2 octahedra, edges with two equivalent O(2)Ba4Ti2 octahedra, edges with two equivalent O(5)Ba4TiNb octahedra, and  a faceface with one O(4)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 2-60°. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Na(3), one Nb(1), and one Nb(5) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Na(3), one Ti(2), and one Nb(2) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to two equivalent Na(4), two equivalent Na(6), one Nb(2), and one Nb(4) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Ba(2), one Ti(2), and one Nb(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Ba(3), one Ti(1), and one Ti(3) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Na(4), one Nb(2), and one Nb(5) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to two equivalent Na(4), two equivalent Na(6), one Nb(3), and one Nb(5) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to two equivalent Na(5), two equivalent Na(7), one Nb(3), and one Nb(7) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to two equivalent Na(3), two equivalent Ba(3), one Ti(2), and one Nb(1) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to two equivalent Na(5), two equivalent Na(7), one Nb(4), and one Nb(6) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to two equivalent Na(4), two equivalent Na(5), one Nb(3), and one Nb(4) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to two equivalent Na(3), two equivalent Na(6), one Nb(2), and one Nb(5) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to two equivalent Na(5), two equivalent Ba(1), one Nb(6), and one Nb(7) atom. In the nineteenth O site, O(19) is bonded in a distorted linear geometry to two equivalent Na(6), two equivalent Na(7), one Nb(3), and one Nb(4) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Na(7), one Nb(6), and one Nb(7) atom. In the twenty-first O site, O(21) is bonded to one Na(1), one Ba(1), one Ba(2), one Ba(3), and two equivalent Ti(1) atoms to form distorted OBa3NaTi2 octahedra that share corners with two equivalent O(21)Ba3NaTi2 octahedra, corners with four equivalent O(5)Ba4TiNb octahedra, faces with two equivalent O(2)Ba4Ti2 octahedra, and faces with two equivalent O(4)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 2-59°. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Na(2), one Na(3), one Ba(2), one Ba(3), and two equivalent Ti(2) atoms. In the twenty-third O site, O(23) is bonded to one Na(2), one Na(3), one Na(4), one Na(6), and two equivalent Nb(2) atoms to form distorted corner-sharing ONa4Nb2 octahedra. The corner-sharing octahedral tilt angles are 4°. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Na(1), one Ba(1), one Ba(2), one Ba(3), and two equivalent Ti(3) atoms. In the twenty-fifth O site, O(25) is bonded in a distorted linear geometry to one Na(4), one Na(5), one Na(6), one Na(7), and two equivalent Nb(4) atoms. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to one Na(1), one Na(5), one Na(7), one Ba(1), and two equivalent Nb(6) atoms. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to one Na(2), one Na(3), one Ba(2), one Ba(3), and two equivalent Nb(1) atoms. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to one Na(2), one Na(3), one Na(4), one Na(6), and two equivalent Nb(5) atoms. In the twenty-ninth O site, O(29) is bonded in a distorted linear geometry to one Na(4), one Na(5), one Na(6), one Na(7), and two equivalent Nb(3) atoms. In the thirtieth O site, O(30) is bonded in a distorted linear geometry to one Na(1), one Na(5), one Na(7), one Ba(1), and two equivalent Nb(7) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba3Na7Ti3Nb7O30
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.018
_cell_length_b   8.035
_cell_length_c   20.105
_cell_angle_alpha   89.998
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   649.093
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.000  0.501  0.996  1.0
  Ba  Ba1  1  0.000  0.505  0.801  1.0
  Ba  Ba2  1  0.000  0.995  0.801  1.0
  Na  Na3  1  0.000  0.999  0.997  1.0
  Na  Na4  1  0.000  0.504  0.600  1.0
  Na  Na5  1  0.000  0.996  0.601  1.0
  Na  Na6  1  0.000  0.502  0.400  1.0
  Na  Na7  1  0.000  0.501  0.201  1.0
  Na  Na8  1  0.000  0.998  0.400  1.0
  Na  Na9  1  0.000  0.999  0.201  1.0
  Ti  Ti10  1  0.500  0.756  0.900  1.0
  Ti  Ti11  1  0.500  0.750  0.697  1.0
  Ti  Ti12  1  0.500  0.243  0.902  1.0
  Nb  Nb13  1  0.500  0.250  0.697  1.0
  Nb  Nb14  1  0.500  0.750  0.503  1.0
  Nb  Nb15  1  0.500  0.250  0.300  1.0
  Nb  Nb16  1  0.500  0.750  0.302  1.0
  Nb  Nb17  1  0.500  0.250  0.499  1.0
  Nb  Nb18  1  0.500  0.754  0.101  1.0
  Nb  Nb19  1  0.500  0.246  0.101  1.0
  O  O20  1  0.500  0.750  0.001  1.0
  O  O21  1  0.500  0.751  0.800  1.0
  O  O22  1  0.500  0.250  0.001  1.0
  O  O23  1  0.500  0.500  0.901  1.0
  O  O24  1  0.500  0.249  0.800  1.0
  O  O25  1  0.500  0.250  0.599  1.0
  O  O26  1  0.500  0.750  0.600  1.0
  O  O27  1  0.500  0.750  0.400  1.0
  O  O28  1  0.500  0.501  0.699  1.0
  O  O29  1  0.500  0.001  0.900  1.0
  O  O30  1  0.500  0.500  0.500  1.0
  O  O31  1  0.500  0.250  0.400  1.0
  O  O32  1  0.500  0.250  0.200  1.0
  O  O33  1  0.500  0.999  0.699  1.0
  O  O34  1  0.500  0.750  0.200  1.0
  O  O35  1  0.500  0.499  0.300  1.0
  O  O36  1  0.500  0.000  0.500  1.0
  O  O37  1  0.500  0.499  0.100  1.0
  O  O38  1  0.500  0.001  0.300  1.0
  O  O39  1  0.500  0.001  0.101  1.0
  O  O40  1  0.000  0.751  0.901  1.0
  O  O41  1  0.000  0.750  0.699  1.0
  O  O42  1  0.000  0.750  0.499  1.0
  O  O43  1  0.000  0.249  0.900  1.0
  O  O44  1  0.000  0.750  0.299  1.0
  O  O45  1  0.000  0.750  0.100  1.0
  O  O46  1  0.000  0.250  0.699  1.0
  O  O47  1  0.000  0.250  0.500  1.0
  O  O48  1  0.000  0.250  0.300  1.0
  O  O49  1  0.000  0.250  0.100  1.0
[/CIF]
.
The crystal structure described by Na7Ba3Ti3Nb7O30 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are seven inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(21), one O(24), one O(26), one O(30), two equivalent O(1), two equivalent O(10), two equivalent O(20), and two equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Ba(1)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. In the second Na site, Na(2) is bonded to one O(22), one O(23), one O(27), one O(28), two equivalent O(11), two equivalent O(6), two equivalent O(7), and two equivalent O(9) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Na(3)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the third Na site, Na(3) is bonded to one O(22), one O(23), one O(27), one O(28), two equivalent O(14), two equivalent O(17), two equivalent O(6), and two equivalent O(7) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Na(2)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Nb(1)O6 octahedra, faces with two equivalent Nb(2)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the fourth Na site, Na(4) is bonded to one O(23), one O(25), one O(28), one O(29), two equivalent O(11), two equivalent O(12), two equivalent O(16), and two equivalent O(8) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with four equivalent Na(6)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the fifth Na site, Na(5) is bonded to one O(25), one O(26), one O(29), one O(30), two equivalent O(13), two equivalent O(15), two equivalent O(16), and two equivalent O(18) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Na(7)O12 cuboctahedra,  a faceface with one Na(4)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. In the sixth Na site, Na(6) is bonded to one O(23), one O(25), one O(28), one O(29), two equivalent O(12), two equivalent O(17), two equivalent O(19), and two equivalent O(8) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with four equivalent Na(4)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra,  a faceface with one Na(7)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, faces with two equivalent Nb(2)O6 octahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, and faces with two equivalent Nb(5)O6 octahedra. In the seventh Na site, Na(7) is bonded to one O(25), one O(26), one O(29), one O(30), two equivalent O(13), two equivalent O(15), two equivalent O(19), and two equivalent O(20) atoms to form NaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(4)O12 cuboctahedra, corners with two equivalent Na(6)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Na(5)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(6)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, faces with two equivalent Nb(3)O6 octahedra, faces with two equivalent Nb(4)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(21), one O(24), one O(26), one O(30), two equivalent O(1), two equivalent O(18), two equivalent O(3), and two equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with two equivalent Na(5)O12 cuboctahedra, corners with two equivalent Na(7)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Na(1)O12 cuboctahedra,  a faceface with one Na(5)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Nb(6)O6 octahedra, and faces with two equivalent Nb(7)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(21), one O(22), one O(24), one O(27), two equivalent O(2), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(3)O12 cuboctahedra,  a faceface with one Na(2)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, and faces with two equivalent Nb(1)O6 octahedra. In the third Ba site, Ba(3) is bonded to one O(21), one O(22), one O(24), one O(27), two equivalent O(10), two equivalent O(14), two equivalent O(2), and two equivalent O(5) atoms to form BaO12 cuboctahedra that share corners with two equivalent Na(1)O12 cuboctahedra, corners with two equivalent Na(2)O12 cuboctahedra, corners with two equivalent Na(3)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra,  a faceface with one Na(1)O12 cuboctahedra,  a faceface with one Na(3)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, and faces with two equivalent Nb(1)O6 octahedra. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(10), one O(2), one O(4), and two equivalent O(21) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Nb(6)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second Ti site, Ti(2) is bonded to one O(14), one O(2), one O(7), one O(9), and two equivalent O(22) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Nb(1)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the third Ti site, Ti(3) is bonded to one O(10), one O(3), one O(4), one O(5), and two equivalent O(24) atoms to form TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(7)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are seven inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(14), one O(5), one O(6), one O(9), and two equivalent O(27) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Nb(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Nb(1)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Ba(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Nb site, Nb(2) is bonded to one O(11), one O(17), one O(7), one O(8), and two equivalent O(23) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent Nb(5)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, and faces with two equivalent Na(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. In the third Nb site, Nb(3) is bonded to one O(12), one O(13), one O(16), one O(19), and two equivalent O(29) atoms to form NbO6 octahedra that share  a cornercorner with one Nb(5)O6 octahedra,  a cornercorner with one Nb(7)O6 octahedra, corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 octahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, and faces with two equivalent Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the fourth Nb site, Nb(4) is bonded to one O(15), one O(16), one O(19), one O(8), and two equivalent O(25) atoms to form NbO6 octahedra that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Nb(6)O6 octahedra, corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 octahedra, faces with two equivalent Na(4)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(6)O12 cuboctahedra, and faces with two equivalent Na(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the fifth Nb site, Nb(5) is bonded to one O(11), one O(12), one O(17), one O(6), and two equivalent O(28) atoms to form NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(3)O6 octahedra, corners with two equivalent Nb(2)O6 octahedra, corners with two equivalent Nb(5)O6 octahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(4)O12 cuboctahedra, and faces with two equivalent Na(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the sixth Nb site, Nb(6) is bonded to one O(1), one O(15), one O(18), one O(20), and two equivalent O(26) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra, corners with two equivalent Nb(6)O6 octahedra, corners with two equivalent Nb(7)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the seventh Nb site, Nb(7) is bonded to one O(13), one O(18), one O(20), one O(3), and two equivalent O(30) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Nb(3)O6 octahedra, corners with two equivalent Nb(6)O6 octahedra, corners with two equivalent Nb(7)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(5)O12 cuboctahedra, faces with two equivalent Na(7)O12 cuboctahedra, and faces with two equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Ba(1), one Ti(1), and one Nb(6) atom. In the second O site, O(2) is bonded to two equivalent Ba(2), two equivalent Ba(3), one Ti(1), and one Ti(2) atom to form distorted OBa4Ti2 octahedra that share corners with two equivalent O(4)Ba4Ti2 octahedra, corners with four equivalent O(5)Ba4TiNb octahedra, edges with two equivalent O(2)Ba4Ti2 octahedra, edges with two equivalent O(5)Ba4TiNb octahedra,  a faceface with one O(4)Ba4Ti2 octahedra, and faces with two equivalent O(21)Ba3NaTi2 octahedra. The corner-sharing octahedral tilt angles range from 2-59°. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Ba(1), one Ti(3), and one Nb(7) atom. In the fourth O site, O(4) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Ti(1), and one Ti(3) atom to form distorted OBa4Ti2 octahedra that share corners with two equivalent O(2)Ba4Ti2 octahedra, corners with two equivalent O(5)Ba4TiNb octahedra, edges with two equivalent O(4)Ba4Ti2 octahedra,  a faceface with one O(2)Ba4Ti2 octahedra,  a faceface with one O(5)Ba4TiNb octahedra, and faces with two equivalent O(21)Ba3NaTi2 octahedra. The corner-sharing octahedral tilt angles range from 59-60°. In the fifth O site, O(5) is bonded to two equivalent Ba(2), two equivalent Ba(3), one Ti(3), and one Nb(1) atom to form distorted OBa4TiNb octahedra that share corners with two equivalent O(4)Ba4Ti2 octahedra, corners with four equivalent O(21)Ba3NaTi2 octahedra, corners with four equivalent O(2)Ba4Ti2 octahedra, edges with two equivalent O(2)Ba4Ti2 octahedra, edges with two equivalent O(5)Ba4TiNb octahedra, and  a faceface with one O(4)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 2-60°. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Na(3), one Nb(1), and one Nb(5) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Na(3), one Ti(2), and one Nb(2) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to two equivalent Na(4), two equivalent Na(6), one Nb(2), and one Nb(4) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Ba(2), one Ti(2), and one Nb(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Ba(3), one Ti(1), and one Ti(3) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to two equivalent Na(2), two equivalent Na(4), one Nb(2), and one Nb(5) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to two equivalent Na(4), two equivalent Na(6), one Nb(3), and one Nb(5) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to two equivalent Na(5), two equivalent Na(7), one Nb(3), and one Nb(7) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to two equivalent Na(3), two equivalent Ba(3), one Ti(2), and one Nb(1) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to two equivalent Na(5), two equivalent Na(7), one Nb(4), and one Nb(6) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to two equivalent Na(4), two equivalent Na(5), one Nb(3), and one Nb(4) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to two equivalent Na(3), two equivalent Na(6), one Nb(2), and one Nb(5) atom. In the eighteenth O site, O(18) is bonded in a distorted linear geometry to two equivalent Na(5), two equivalent Ba(1), one Nb(6), and one Nb(7) atom. In the nineteenth O site, O(19) is bonded in a distorted linear geometry to two equivalent Na(6), two equivalent Na(7), one Nb(3), and one Nb(4) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Na(7), one Nb(6), and one Nb(7) atom. In the twenty-first O site, O(21) is bonded to one Na(1), one Ba(1), one Ba(2), one Ba(3), and two equivalent Ti(1) atoms to form distorted OBa3NaTi2 octahedra that share corners with two equivalent O(21)Ba3NaTi2 octahedra, corners with four equivalent O(5)Ba4TiNb octahedra, faces with two equivalent O(2)Ba4Ti2 octahedra, and faces with two equivalent O(4)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 2-59°. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Na(2), one Na(3), one Ba(2), one Ba(3), and two equivalent Ti(2) atoms. In the twenty-third O site, O(23) is bonded to one Na(2), one Na(3), one Na(4), one Na(6), and two equivalent Nb(2) atoms to form distorted corner-sharing ONa4Nb2 octahedra. The corner-sharing octahedral tilt angles are 4°. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Na(1), one Ba(1), one Ba(2), one Ba(3), and two equivalent Ti(3) atoms. In the twenty-fifth O site, O(25) is bonded in a distorted linear geometry to one Na(4), one Na(5), one Na(6), one Na(7), and two equivalent Nb(4) atoms. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to one Na(1), one Na(5), one Na(7), one Ba(1), and two equivalent Nb(6) atoms. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to one Na(2), one Na(3), one Ba(2), one Ba(3), and two equivalent Nb(1) atoms. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to one Na(2), one Na(3), one Na(4), one Na(6), and two equivalent Nb(5) atoms. In the twenty-ninth O site, O(29) is bonded in a distorted linear geometry to one Na(4), one Na(5), one Na(6), one Na(7), and two equivalent Nb(3) atoms. In the thirtieth O site, O(30) is bonded in a distorted linear geometry to one Na(1), one Na(5), one Na(7), one Ba(1), and two equivalent Nb(7) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba3Na7Ti3Nb7O30
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.018
_cell_length_b   8.035
_cell_length_c   20.105
_cell_angle_alpha   89.998
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   649.093
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.000  0.501  0.996  1.0
  Ba  Ba1  1  0.000  0.505  0.801  1.0
  Ba  Ba2  1  0.000  0.995  0.801  1.0
  Na  Na3  1  0.000  0.999  0.997  1.0
  Na  Na4  1  0.000  0.504  0.600  1.0
  Na  Na5  1  0.000  0.996  0.601  1.0
  Na  Na6  1  0.000  0.502  0.400  1.0
  Na  Na7  1  0.000  0.501  0.201  1.0
  Na  Na8  1  0.000  0.998  0.400  1.0
  Na  Na9  1  0.000  0.999  0.201  1.0
  Ti  Ti10  1  0.500  0.756  0.900  1.0
  Ti  Ti11  1  0.500  0.750  0.697  1.0
  Ti  Ti12  1  0.500  0.243  0.902  1.0
  Nb  Nb13  1  0.500  0.250  0.697  1.0
  Nb  Nb14  1  0.500  0.750  0.503  1.0
  Nb  Nb15  1  0.500  0.250  0.300  1.0
  Nb  Nb16  1  0.500  0.750  0.302  1.0
  Nb  Nb17  1  0.500  0.250  0.499  1.0
  Nb  Nb18  1  0.500  0.754  0.101  1.0
  Nb  Nb19  1  0.500  0.246  0.101  1.0
  O  O20  1  0.500  0.750  0.001  1.0
  O  O21  1  0.500  0.751  0.800  1.0
  O  O22  1  0.500  0.250  0.001  1.0
  O  O23  1  0.500  0.500  0.901  1.0
  O  O24  1  0.500  0.249  0.800  1.0
  O  O25  1  0.500  0.250  0.599  1.0
  O  O26  1  0.500  0.750  0.600  1.0
  O  O27  1  0.500  0.750  0.400  1.0
  O  O28  1  0.500  0.501  0.699  1.0
  O  O29  1  0.500  0.001  0.900  1.0
  O  O30  1  0.500  0.500  0.500  1.0
  O  O31  1  0.500  0.250  0.400  1.0
  O  O32  1  0.500  0.250  0.200  1.0
  O  O33  1  0.500  0.999  0.699  1.0
  O  O34  1  0.500  0.750  0.200  1.0
  O  O35  1  0.500  0.499  0.300  1.0
  O  O36  1  0.500  0.000  0.500  1.0
  O  O37  1  0.500  0.499  0.100  1.0
  O  O38  1  0.500  0.001  0.300  1.0
  O  O39  1  0.500  0.001  0.101  1.0
  O  O40  1  0.000  0.751  0.901  1.0
  O  O41  1  0.000  0.750  0.699  1.0
  O  O42  1  0.000  0.750  0.499  1.0
  O  O43  1  0.000  0.249  0.900  1.0
  O  O44  1  0.000  0.750  0.299  1.0
  O  O45  1  0.000  0.750  0.100  1.0
  O  O46  1  0.000  0.250  0.699  1.0
  O  O47  1  0.000  0.250  0.500  1.0
  O  O48  1  0.000  0.250  0.300  1.0
  O  O49  1  0.000  0.250  0.100  1.0
[/CIF]
.