The compound described by Ba2TaMnO6 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. There are eight inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(21), one O(22), one O(5), one O(6), one O(9), two equivalent O(1), two equivalent O(13), and two equivalent O(17) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(5)O12 cuboctahedra, faces with three equivalent Ba(6)O12 cuboctahedra,  a faceface with one Ta(2)O6 octahedra,  a faceface with one Mn(1)O6 octahedra, faces with three equivalent Ta(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(10), one O(12), one O(22), one O(24), one O(6), one O(8), two equivalent O(14), two equivalent O(18), and two equivalent O(2) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(4)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(6)O12 cuboctahedra, faces with three equivalent Ba(8)O12 cuboctahedra,  a faceface with one Ta(4)O6 octahedra,  a faceface with one Mn(2)O6 octahedra, faces with three equivalent Ta(2)O6 octahedra, and faces with three equivalent Mn(4)O6 octahedra. In the third Ba site, Ba(3) is bonded to one O(11), one O(21), one O(23), one O(5), one O(7), one O(9), two equivalent O(15), two equivalent O(19), and two equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(4)O12 cuboctahedra, corners with six equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(5)O12 cuboctahedra, faces with three equivalent Ba(7)O12 cuboctahedra,  a faceface with one Ta(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Ta(3)O6 octahedra, and faces with three equivalent Mn(1)O6 octahedra. In the fourth Ba site, Ba(4) is bonded to one O(11), one O(12), one O(23), one O(24), one O(7), one O(8), two equivalent O(16), two equivalent O(20), and two equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(4)O12 cuboctahedra, faces with three equivalent Ba(7)O12 cuboctahedra, faces with three equivalent Ba(8)O12 cuboctahedra,  a faceface with one Ta(3)O6 octahedra,  a faceface with one Mn(4)O6 octahedra, faces with three equivalent Ta(4)O6 octahedra, and faces with three equivalent Mn(3)O6 octahedra. In the fifth Ba site, Ba(5) is bonded to one O(1), one O(13), one O(15), one O(17), one O(19), one O(3), two equivalent O(21), two equivalent O(5), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(6)O12 cuboctahedra, corners with three equivalent Ba(7)O12 cuboctahedra, corners with six equivalent Ba(5)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ta(3)O6 octahedra,  a faceface with one Mn(2)O6 octahedra, faces with three equivalent Ta(1)O6 octahedra, and faces with three equivalent Mn(1)O6 octahedra. In the sixth Ba site, Ba(6) is bonded to one O(1), one O(13), one O(14), one O(17), one O(18), one O(2), two equivalent O(10), two equivalent O(22), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(5)O12 cuboctahedra, corners with three equivalent Ba(8)O12 cuboctahedra, corners with six equivalent Ba(6)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ta(1)O6 octahedra,  a faceface with one Mn(4)O6 octahedra, faces with three equivalent Ta(2)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the seventh Ba site, Ba(7) is bonded to one O(15), one O(16), one O(19), one O(20), one O(3), one O(4), two equivalent O(11), two equivalent O(23), and two equivalent O(7) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(5)O12 cuboctahedra, corners with three equivalent Ba(8)O12 cuboctahedra, corners with six equivalent Ba(7)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra,  a faceface with one Ta(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra, faces with three equivalent Ta(3)O6 octahedra, and faces with three equivalent Mn(3)O6 octahedra. In the eighth Ba site, Ba(8) is bonded to one O(14), one O(16), one O(18), one O(2), one O(20), one O(4), two equivalent O(12), two equivalent O(24), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(6)O12 cuboctahedra, corners with three equivalent Ba(7)O12 cuboctahedra, corners with six equivalent Ba(8)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra,  a faceface with one Ta(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Ta(4)O6 octahedra, and faces with three equivalent Mn(4)O6 octahedra. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(13), one O(17), one O(21), one O(5), and one O(9) atom to form TaO6 octahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(2)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, and faces with three equivalent Ba(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the second Ta site, Ta(2) is bonded to one O(10), one O(14), one O(18), one O(2), one O(22), and one O(6) atom to form TaO6 octahedra that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, and faces with three equivalent Ba(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the third Ta site, Ta(3) is bonded to one O(11), one O(15), one O(19), one O(23), one O(3), and one O(7) atom to form TaO6 octahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the fourth Ta site, Ta(4) is bonded to one O(12), one O(16), one O(20), one O(24), one O(4), and one O(8) atom to form TaO6 octahedra that share corners with three equivalent Mn(3)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra, and faces with three equivalent Ba(8)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(15), one O(19), one O(21), one O(3), one O(5), and one O(9) atom to form MnO6 octahedra that share corners with three equivalent Ta(1)O6 octahedra, corners with three equivalent Ta(3)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(13), one O(17), one O(22), and one O(6) atom to form MnO6 octahedra that share corners with three equivalent Ta(1)O6 octahedra, corners with three equivalent Ta(2)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, and faces with three equivalent Ba(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the third Mn site, Mn(3) is bonded to one O(11), one O(16), one O(20), one O(23), one O(4), and one O(7) atom to form MnO6 octahedra that share corners with three equivalent Ta(3)O6 octahedra, corners with three equivalent Ta(4)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra, and faces with three equivalent Ba(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(14), one O(18), one O(2), one O(24), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Ta(2)O6 octahedra, corners with three equivalent Ta(4)O6 octahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, and faces with three equivalent Ba(8)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(5), one Ba(6), two equivalent Ba(1), one Ta(1), and one Mn(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(6), one Ba(8), two equivalent Ba(2), one Ta(2), and one Mn(4) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Ba(5), one Ba(7), two equivalent Ba(3), one Ta(3), and one Mn(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(7), one Ba(8), two equivalent Ba(4), one Ta(4), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Ba(1), one Ba(3), two equivalent Ba(5), one Ta(1), and one Mn(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(6), one Ta(2), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(7), one Ta(3), and one Mn(3) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Ba(2), one Ba(4), two equivalent Ba(8), one Ta(4), and one Mn(4) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Ba(1), one Ba(3), two equivalent Ba(5), one Ta(1), and one Mn(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), two equivalent Ba(6), one Ta(2), and one Mn(2) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(3), one Ba(4), two equivalent Ba(7), one Ta(3), and one Mn(3) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(2), one Ba(4), two equivalent Ba(8), one Ta(4), and one Mn(4) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Ba(5), one Ba(6), two equivalent Ba(1), one Ta(1), and one Mn(2) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(6), one Ba(8), two equivalent Ba(2), one Ta(2), and one Mn(4) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Ba(5), one Ba(7), two equivalent Ba(3), one Ta(3), and one Mn(1) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Ba(7), one Ba(8), two equivalent Ba(4), one Ta(4), and one Mn(3) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Ba(5), one Ba(6), two equivalent Ba(1), one Ta(1), and one Mn(2) atom. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Ba(6), one Ba(8), two equivalent Ba(2), one Ta(2), and one Mn(4) atom. In the nineteenth O site, O(19) is bonded in a 6-coordinate geometry to one Ba(5), one Ba(7), two equivalent Ba(3), one Ta(3), and one Mn(1) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to one Ba(7), one Ba(8), two equivalent Ba(4), one Ta(4), and one Mn(3) atom. In the twenty-first O site, O(21) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), two equivalent Ba(5), one Ta(1), and one Mn(1) atom. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), two equivalent Ba(6), one Ta(2), and one Mn(2) atom. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Ba(3), one Ba(4), two equivalent Ba(7), one Ta(3), and one Mn(3) atom. In the twenty-fourth O site, O(24) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), two equivalent Ba(8), one Ta(4), and one Mn(4) atom. is represented by the CIF file [CIF]
data_Ba2TaMnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.782
_cell_length_b   5.783
_cell_length_c   9.976
_cell_angle_alpha   74.747
_cell_angle_beta   74.790
_cell_angle_gamma   61.298
_symmetry_Int_Tables_number   1
_cell_volume   278.560
_cell_formula_units_Z   2
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  0.492  0.509  0.500  1.0
  Ba  Ba1  1  0.008  0.991  0.001  1.0
  Ba  Ba2  1  0.742  0.759  0.749  1.0
  Ba  Ba3  1  0.258  0.241  0.250  1.0
  Mn  Mn4  1  0.375  0.375  0.875  1.0
  Mn  Mn5  1  0.875  0.875  0.375  1.0
  O  O6  1  0.459  0.029  0.505  1.0
  O  O7  1  0.019  0.482  0.002  1.0
  O  O8  1  0.731  0.268  0.748  1.0
  O  O9  1  0.291  0.720  0.245  1.0
  O  O10  1  0.234  0.268  0.750  1.0
  O  O11  1  0.769  0.732  0.251  1.0
  O  O12  1  0.981  0.018  0.499  1.0
  O  O13  1  0.516  0.482  0.999  1.0
  O  O14  1  0.981  0.522  0.504  1.0
  O  O15  1  0.527  0.959  0.005  1.0
  O  O16  1  0.223  0.791  0.745  1.0
  O  O17  1  0.769  0.228  0.247  1.0
  Ta  Ta18  1  0.112  0.138  0.625  1.0
  Ta  Ta19  1  0.637  0.612  0.125  1.0
[/CIF]
.
The compound described by Ba2TaMnO6 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. There are eight inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(21), one O(22), one O(5), one O(6), one O(9), two equivalent O(1), two equivalent O(13), and two equivalent O(17) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(5)O12 cuboctahedra, faces with three equivalent Ba(6)O12 cuboctahedra,  a faceface with one Ta(2)O6 octahedra,  a faceface with one Mn(1)O6 octahedra, faces with three equivalent Ta(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(10), one O(12), one O(22), one O(24), one O(6), one O(8), two equivalent O(14), two equivalent O(18), and two equivalent O(2) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(4)O12 cuboctahedra, corners with six equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(6)O12 cuboctahedra, faces with three equivalent Ba(8)O12 cuboctahedra,  a faceface with one Ta(4)O6 octahedra,  a faceface with one Mn(2)O6 octahedra, faces with three equivalent Ta(2)O6 octahedra, and faces with three equivalent Mn(4)O6 octahedra. In the third Ba site, Ba(3) is bonded to one O(11), one O(21), one O(23), one O(5), one O(7), one O(9), two equivalent O(15), two equivalent O(19), and two equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(4)O12 cuboctahedra, corners with six equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(5)O12 cuboctahedra, faces with three equivalent Ba(7)O12 cuboctahedra,  a faceface with one Ta(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Ta(3)O6 octahedra, and faces with three equivalent Mn(1)O6 octahedra. In the fourth Ba site, Ba(4) is bonded to one O(11), one O(12), one O(23), one O(24), one O(7), one O(8), two equivalent O(16), two equivalent O(20), and two equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Ba(3)O12 cuboctahedra, corners with six equivalent Ba(4)O12 cuboctahedra, faces with three equivalent Ba(7)O12 cuboctahedra, faces with three equivalent Ba(8)O12 cuboctahedra,  a faceface with one Ta(3)O6 octahedra,  a faceface with one Mn(4)O6 octahedra, faces with three equivalent Ta(4)O6 octahedra, and faces with three equivalent Mn(3)O6 octahedra. In the fifth Ba site, Ba(5) is bonded to one O(1), one O(13), one O(15), one O(17), one O(19), one O(3), two equivalent O(21), two equivalent O(5), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(6)O12 cuboctahedra, corners with three equivalent Ba(7)O12 cuboctahedra, corners with six equivalent Ba(5)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra,  a faceface with one Ta(3)O6 octahedra,  a faceface with one Mn(2)O6 octahedra, faces with three equivalent Ta(1)O6 octahedra, and faces with three equivalent Mn(1)O6 octahedra. In the sixth Ba site, Ba(6) is bonded to one O(1), one O(13), one O(14), one O(17), one O(18), one O(2), two equivalent O(10), two equivalent O(22), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(5)O12 cuboctahedra, corners with three equivalent Ba(8)O12 cuboctahedra, corners with six equivalent Ba(6)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ta(1)O6 octahedra,  a faceface with one Mn(4)O6 octahedra, faces with three equivalent Ta(2)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the seventh Ba site, Ba(7) is bonded to one O(15), one O(16), one O(19), one O(20), one O(3), one O(4), two equivalent O(11), two equivalent O(23), and two equivalent O(7) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(5)O12 cuboctahedra, corners with three equivalent Ba(8)O12 cuboctahedra, corners with six equivalent Ba(7)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra,  a faceface with one Ta(4)O6 octahedra,  a faceface with one Mn(1)O6 octahedra, faces with three equivalent Ta(3)O6 octahedra, and faces with three equivalent Mn(3)O6 octahedra. In the eighth Ba site, Ba(8) is bonded to one O(14), one O(16), one O(18), one O(2), one O(20), one O(4), two equivalent O(12), two equivalent O(24), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(6)O12 cuboctahedra, corners with three equivalent Ba(7)O12 cuboctahedra, corners with six equivalent Ba(8)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra,  a faceface with one Ta(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Ta(4)O6 octahedra, and faces with three equivalent Mn(4)O6 octahedra. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(13), one O(17), one O(21), one O(5), and one O(9) atom to form TaO6 octahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(2)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, and faces with three equivalent Ba(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the second Ta site, Ta(2) is bonded to one O(10), one O(14), one O(18), one O(2), one O(22), and one O(6) atom to form TaO6 octahedra that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, and faces with three equivalent Ba(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the third Ta site, Ta(3) is bonded to one O(11), one O(15), one O(19), one O(23), one O(3), and one O(7) atom to form TaO6 octahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the fourth Ta site, Ta(4) is bonded to one O(12), one O(16), one O(20), one O(24), one O(4), and one O(8) atom to form TaO6 octahedra that share corners with three equivalent Mn(3)O6 octahedra, corners with three equivalent Mn(4)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra, and faces with three equivalent Ba(8)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(15), one O(19), one O(21), one O(3), one O(5), and one O(9) atom to form MnO6 octahedra that share corners with three equivalent Ta(1)O6 octahedra, corners with three equivalent Ta(3)O6 octahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(7)O12 cuboctahedra, faces with three equivalent Ba(3)O12 cuboctahedra, and faces with three equivalent Ba(5)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(13), one O(17), one O(22), and one O(6) atom to form MnO6 octahedra that share corners with three equivalent Ta(1)O6 octahedra, corners with three equivalent Ta(2)O6 octahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Ba(5)O12 cuboctahedra, faces with three equivalent Ba(1)O12 cuboctahedra, and faces with three equivalent Ba(6)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the third Mn site, Mn(3) is bonded to one O(11), one O(16), one O(20), one O(23), one O(4), and one O(7) atom to form MnO6 octahedra that share corners with three equivalent Ta(3)O6 octahedra, corners with three equivalent Ta(4)O6 octahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Ba(8)O12 cuboctahedra, faces with three equivalent Ba(4)O12 cuboctahedra, and faces with three equivalent Ba(7)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(14), one O(18), one O(2), one O(24), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Ta(2)O6 octahedra, corners with three equivalent Ta(4)O6 octahedra,  a faceface with one Ba(4)O12 cuboctahedra,  a faceface with one Ba(6)O12 cuboctahedra, faces with three equivalent Ba(2)O12 cuboctahedra, and faces with three equivalent Ba(8)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one Ba(5), one Ba(6), two equivalent Ba(1), one Ta(1), and one Mn(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ba(6), one Ba(8), two equivalent Ba(2), one Ta(2), and one Mn(4) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Ba(5), one Ba(7), two equivalent Ba(3), one Ta(3), and one Mn(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(7), one Ba(8), two equivalent Ba(4), one Ta(4), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Ba(1), one Ba(3), two equivalent Ba(5), one Ta(1), and one Mn(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), two equivalent Ba(6), one Ta(2), and one Mn(2) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(3), one Ba(4), two equivalent Ba(7), one Ta(3), and one Mn(3) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to one Ba(2), one Ba(4), two equivalent Ba(8), one Ta(4), and one Mn(4) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one Ba(1), one Ba(3), two equivalent Ba(5), one Ta(1), and one Mn(1) atom. In the tenth O site, O(10) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), two equivalent Ba(6), one Ta(2), and one Mn(2) atom. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(3), one Ba(4), two equivalent Ba(7), one Ta(3), and one Mn(3) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(2), one Ba(4), two equivalent Ba(8), one Ta(4), and one Mn(4) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Ba(5), one Ba(6), two equivalent Ba(1), one Ta(1), and one Mn(2) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(6), one Ba(8), two equivalent Ba(2), one Ta(2), and one Mn(4) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Ba(5), one Ba(7), two equivalent Ba(3), one Ta(3), and one Mn(1) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Ba(7), one Ba(8), two equivalent Ba(4), one Ta(4), and one Mn(3) atom. In the seventeenth O site, O(17) is bonded in a distorted linear geometry to one Ba(5), one Ba(6), two equivalent Ba(1), one Ta(1), and one Mn(2) atom. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Ba(6), one Ba(8), two equivalent Ba(2), one Ta(2), and one Mn(4) atom. In the nineteenth O site, O(19) is bonded in a 6-coordinate geometry to one Ba(5), one Ba(7), two equivalent Ba(3), one Ta(3), and one Mn(1) atom. In the twentieth O site, O(20) is bonded in a distorted linear geometry to one Ba(7), one Ba(8), two equivalent Ba(4), one Ta(4), and one Mn(3) atom. In the twenty-first O site, O(21) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(3), two equivalent Ba(5), one Ta(1), and one Mn(1) atom. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), two equivalent Ba(6), one Ta(2), and one Mn(2) atom. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Ba(3), one Ba(4), two equivalent Ba(7), one Ta(3), and one Mn(3) atom. In the twenty-fourth O site, O(24) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), two equivalent Ba(8), one Ta(4), and one Mn(4) atom. is represented by the CIF file [CIF]
data_Ba2TaMnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.782
_cell_length_b   5.783
_cell_length_c   9.976
_cell_angle_alpha   74.747
_cell_angle_beta   74.790
_cell_angle_gamma   61.298
_symmetry_Int_Tables_number   1
_cell_volume   278.560
_cell_formula_units_Z   2
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  0.492  0.509  0.500  1.0
  Ba  Ba1  1  0.008  0.991  0.001  1.0
  Ba  Ba2  1  0.742  0.759  0.749  1.0
  Ba  Ba3  1  0.258  0.241  0.250  1.0
  Mn  Mn4  1  0.375  0.375  0.875  1.0
  Mn  Mn5  1  0.875  0.875  0.375  1.0
  O  O6  1  0.459  0.029  0.505  1.0
  O  O7  1  0.019  0.482  0.002  1.0
  O  O8  1  0.731  0.268  0.748  1.0
  O  O9  1  0.291  0.720  0.245  1.0
  O  O10  1  0.234  0.268  0.750  1.0
  O  O11  1  0.769  0.732  0.251  1.0
  O  O12  1  0.981  0.018  0.499  1.0
  O  O13  1  0.516  0.482  0.999  1.0
  O  O14  1  0.981  0.522  0.504  1.0
  O  O15  1  0.527  0.959  0.005  1.0
  O  O16  1  0.223  0.791  0.745  1.0
  O  O17  1  0.769  0.228  0.247  1.0
  Ta  Ta18  1  0.112  0.138  0.625  1.0
  Ta  Ta19  1  0.637  0.612  0.125  1.0
[/CIF]
.