The material described by Ba2Sr2CaTi5O15 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(12), one O(13), one O(14), one O(15), two equivalent O(10), two equivalent O(2), two equivalent O(4), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Ti(4)O6 octahedra, and faces with two equivalent Ti(5)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(11), one O(13), one O(14), one O(15), two equivalent O(10), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Ti(4)O6 octahedra, and faces with two equivalent Ti(5)O6 octahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(11), one O(12), one O(14), one O(15), two equivalent O(1), two equivalent O(4), two equivalent O(6), and two equivalent O(7) atoms to form SrO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(4)O6 octahedra, and faces with two equivalent Ti(5)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(11), one O(12), one O(13), one O(15), two equivalent O(2), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Sr(2)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 Ti(5)O6 octahedra. Ca(1) is bonded to one O(11), one O(12), one O(13), one O(14), two equivalent O(1), two equivalent O(3), two equivalent O(8), and two equivalent O(9) atoms to form CaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with two equivalent Ca(1)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 Ti(4)O6 octahedra. There are five inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(5), one O(6), one O(8), and two equivalent O(11) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with two equivalent Ca(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-2°. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), one O(7), one O(9), and two equivalent O(12) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with two equivalent Ca(1)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(2), one O(3), one O(8), and two equivalent O(13) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with two equivalent Ca(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the fourth Ti site, Ti(4) is bonded to one O(3), one O(4), one O(6), one O(9), and two equivalent O(14) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Ca(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-3°. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(4), one O(5), one O(7), and two equivalent O(15) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Ca(1), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent Sr(2), one Ti(2), and one Ti(3) atom to form distorted OBa2Sr2Ti2 octahedra that share corners with two equivalent O(5)Ba2Sr2Ti2 octahedra, corners with two equivalent O(10)Ba4Ti2 octahedra,  an edgeedge with one O(5)Ba2Sr2Ti2 octahedra, edges with two equivalent O(2)Ba2Sr2Ti2 octahedra, and  a faceface with one O(10)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Ba(2), two equivalent Ca(1), one Ti(3), and one Ti(4) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent Ba(1), two equivalent Sr(1), one Ti(4), and one Ti(5) atom. In the fifth O site, O(5) is bonded to two equivalent Ba(2), two equivalent Sr(2), one Ti(1), and one Ti(5) atom to form distorted OBa2Sr2Ti2 octahedra that share corners with two equivalent O(2)Ba2Sr2Ti2 octahedra, corners with two equivalent O(6)Ba2Sr2Ti2 octahedra, corners with two equivalent O(10)Ba4Ti2 octahedra,  an edgeedge with one O(2)Ba2Sr2Ti2 octahedra, edges with two equivalent O(5)Ba2Sr2Ti2 octahedra,  a faceface with one O(6)Ba2Sr2Ti2 octahedra, and  a faceface with one O(10)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the sixth O site, O(6) is bonded to two equivalent Ba(2), two equivalent Sr(1), one Ti(1), and one Ti(4) atom to form distorted OBa2Sr2Ti2 octahedra that share corners with two equivalent O(5)Ba2Sr2Ti2 octahedra, corners with two equivalent O(10)Ba4Ti2 octahedra,  an edgeedge with one O(10)Ba4Ti2 octahedra, edges with two equivalent O(6)Ba2Sr2Ti2 octahedra, and  a faceface with one O(5)Ba2Sr2Ti2 octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the seventh O site, O(7) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), one Ti(2), and one Ti(5) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to two equivalent Sr(2), two equivalent Ca(1), one Ti(1), and one Ti(3) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Ba(1), two equivalent Ca(1), one Ti(2), and one Ti(4) atom. In the tenth O site, O(10) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Ti(3), and one Ti(5) atom to form distorted OBa4Ti2 octahedra that share corners with two equivalent O(2)Ba2Sr2Ti2 octahedra, corners with two equivalent O(5)Ba2Sr2Ti2 octahedra, corners with two equivalent O(6)Ba2Sr2Ti2 octahedra,  an edgeedge with one O(6)Ba2Sr2Ti2 octahedra, edges with two equivalent O(10)Ba4Ti2 octahedra,  a faceface with one O(2)Ba2Sr2Ti2 octahedra, and  a faceface with one O(5)Ba2Sr2Ti2 octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(2), one Sr(1), one Sr(2), one Ca(1), and two equivalent Ti(1) atoms. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(1), one Sr(1), one Sr(2), one Ca(1), and two equivalent Ti(2) atoms. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Sr(2), one Ca(1), and two equivalent Ti(3) atoms. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Sr(1), one Ca(1), and two equivalent Ti(4) atoms. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Sr(1), one Sr(2), and two equivalent Ti(5) atoms. is represented by the CIF card [CIF]
data_Ba2Sr2CaTi5O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.971
_cell_length_b   8.880
_cell_length_c   8.888
_cell_angle_alpha   89.977
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   313.393
_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  0.500  0.099  0.300  1.0
  Ba  Ba1  1  0.500  0.301  0.900  1.0
  Sr  Sr2  1  0.500  0.501  0.501  1.0
  Sr  Sr3  1  0.500  0.700  0.100  1.0
  Ca  Ca4  1  0.500  0.900  0.700  1.0
  Ti  Ti5  1  0.000  0.605  0.798  1.0
  Ti  Ti6  1  0.000  0.798  0.403  1.0
  Ti  Ti7  1  0.000  0.995  0.996  1.0
  Ti  Ti8  1  0.000  0.198  0.601  1.0
  Ti  Ti9  1  0.000  0.405  0.202  1.0
  O  O10  1  0.000  0.703  0.601  1.0
  O  O11  1  0.000  0.893  0.197  1.0
  O  O12  1  0.000  0.092  0.796  1.0
  O  O13  1  0.000  0.304  0.403  1.0
  O  O14  1  0.000  0.508  0.003  1.0
  O  O15  1  0.000  0.403  0.696  1.0
  O  O16  1  0.000  0.600  0.303  1.0
  O  O17  1  0.000  0.801  0.896  1.0
  O  O18  1  0.000  0.996  0.507  1.0
  O  O19  1  0.000  0.200  0.099  1.0
  O  O20  1  0.500  0.609  0.797  1.0
  O  O21  1  0.500  0.795  0.405  1.0
  O  O22  1  0.500  0.991  0.993  1.0
  O  O23  1  0.500  0.197  0.601  1.0
  O  O24  1  0.500  0.408  0.204  1.0
[/CIF]
.
The material described by Ba2Sr2CaTi5O15 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(12), one O(13), one O(14), one O(15), two equivalent O(10), two equivalent O(2), two equivalent O(4), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Ti(4)O6 octahedra, and faces with two equivalent Ti(5)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(11), one O(13), one O(14), one O(15), two equivalent O(10), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form BaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(3)O6 octahedra, faces with two equivalent Ti(4)O6 octahedra, and faces with two equivalent Ti(5)O6 octahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(11), one O(12), one O(14), one O(15), two equivalent O(1), two equivalent O(4), two equivalent O(6), and two equivalent O(7) atoms to form SrO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ti(4)O6 octahedra, and faces with two equivalent Ti(5)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(11), one O(12), one O(13), one O(15), two equivalent O(2), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Ca(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(1)O12 cuboctahedra, faces with two equivalent Sr(2)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 Ti(5)O6 octahedra. Ca(1) is bonded to one O(11), one O(12), one O(13), one O(14), two equivalent O(1), two equivalent O(3), two equivalent O(8), and two equivalent O(9) atoms to form CaO12 cuboctahedra that share corners with three equivalent Ba(1)O12 cuboctahedra, corners with three equivalent Ba(2)O12 cuboctahedra, corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with two equivalent Ca(1)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 Ti(4)O6 octahedra. There are five inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(5), one O(6), one O(8), and two equivalent O(11) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with two equivalent Ca(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-2°. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), one O(7), one O(9), and two equivalent O(12) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with two equivalent Ca(1)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(2), one O(3), one O(8), and two equivalent O(13) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(3)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, and faces with two equivalent Ca(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the fourth Ti site, Ti(4) is bonded to one O(3), one O(4), one O(6), one O(9), and two equivalent O(14) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(5)O6 octahedra, corners with two equivalent Ti(4)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Ca(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-3°. In the fifth Ti site, Ti(5) is bonded to one O(10), one O(4), one O(5), one O(7), and two equivalent O(15) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Ti(4)O6 octahedra, corners with two equivalent Ti(5)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Ca(1), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent Sr(2), one Ti(2), and one Ti(3) atom to form distorted OBa2Sr2Ti2 octahedra that share corners with two equivalent O(5)Ba2Sr2Ti2 octahedra, corners with two equivalent O(10)Ba4Ti2 octahedra,  an edgeedge with one O(5)Ba2Sr2Ti2 octahedra, edges with two equivalent O(2)Ba2Sr2Ti2 octahedra, and  a faceface with one O(10)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Ba(2), two equivalent Ca(1), one Ti(3), and one Ti(4) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent Ba(1), two equivalent Sr(1), one Ti(4), and one Ti(5) atom. In the fifth O site, O(5) is bonded to two equivalent Ba(2), two equivalent Sr(2), one Ti(1), and one Ti(5) atom to form distorted OBa2Sr2Ti2 octahedra that share corners with two equivalent O(2)Ba2Sr2Ti2 octahedra, corners with two equivalent O(6)Ba2Sr2Ti2 octahedra, corners with two equivalent O(10)Ba4Ti2 octahedra,  an edgeedge with one O(2)Ba2Sr2Ti2 octahedra, edges with two equivalent O(5)Ba2Sr2Ti2 octahedra,  a faceface with one O(6)Ba2Sr2Ti2 octahedra, and  a faceface with one O(10)Ba4Ti2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the sixth O site, O(6) is bonded to two equivalent Ba(2), two equivalent Sr(1), one Ti(1), and one Ti(4) atom to form distorted OBa2Sr2Ti2 octahedra that share corners with two equivalent O(5)Ba2Sr2Ti2 octahedra, corners with two equivalent O(10)Ba4Ti2 octahedra,  an edgeedge with one O(10)Ba4Ti2 octahedra, edges with two equivalent O(6)Ba2Sr2Ti2 octahedra, and  a faceface with one O(5)Ba2Sr2Ti2 octahedra. The corner-sharing octahedral tilt angles range from 1-61°. In the seventh O site, O(7) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), one Ti(2), and one Ti(5) atom. In the eighth O site, O(8) is bonded in a distorted linear geometry to two equivalent Sr(2), two equivalent Ca(1), one Ti(1), and one Ti(3) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to two equivalent Ba(1), two equivalent Ca(1), one Ti(2), and one Ti(4) atom. In the tenth O site, O(10) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Ti(3), and one Ti(5) atom to form distorted OBa4Ti2 octahedra that share corners with two equivalent O(2)Ba2Sr2Ti2 octahedra, corners with two equivalent O(5)Ba2Sr2Ti2 octahedra, corners with two equivalent O(6)Ba2Sr2Ti2 octahedra,  an edgeedge with one O(6)Ba2Sr2Ti2 octahedra, edges with two equivalent O(10)Ba4Ti2 octahedra,  a faceface with one O(2)Ba2Sr2Ti2 octahedra, and  a faceface with one O(5)Ba2Sr2Ti2 octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the eleventh O site, O(11) is bonded in a distorted linear geometry to one Ba(2), one Sr(1), one Sr(2), one Ca(1), and two equivalent Ti(1) atoms. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one Ba(1), one Sr(1), one Sr(2), one Ca(1), and two equivalent Ti(2) atoms. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Sr(2), one Ca(1), and two equivalent Ti(3) atoms. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Sr(1), one Ca(1), and two equivalent Ti(4) atoms. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Ba(1), one Ba(2), one Sr(1), one Sr(2), and two equivalent Ti(5) atoms. is represented by the CIF card [CIF]
data_Ba2Sr2CaTi5O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.971
_cell_length_b   8.880
_cell_length_c   8.888
_cell_angle_alpha   89.977
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   313.393
_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  0.500  0.099  0.300  1.0
  Ba  Ba1  1  0.500  0.301  0.900  1.0
  Sr  Sr2  1  0.500  0.501  0.501  1.0
  Sr  Sr3  1  0.500  0.700  0.100  1.0
  Ca  Ca4  1  0.500  0.900  0.700  1.0
  Ti  Ti5  1  0.000  0.605  0.798  1.0
  Ti  Ti6  1  0.000  0.798  0.403  1.0
  Ti  Ti7  1  0.000  0.995  0.996  1.0
  Ti  Ti8  1  0.000  0.198  0.601  1.0
  Ti  Ti9  1  0.000  0.405  0.202  1.0
  O  O10  1  0.000  0.703  0.601  1.0
  O  O11  1  0.000  0.893  0.197  1.0
  O  O12  1  0.000  0.092  0.796  1.0
  O  O13  1  0.000  0.304  0.403  1.0
  O  O14  1  0.000  0.508  0.003  1.0
  O  O15  1  0.000  0.403  0.696  1.0
  O  O16  1  0.000  0.600  0.303  1.0
  O  O17  1  0.000  0.801  0.896  1.0
  O  O18  1  0.000  0.996  0.507  1.0
  O  O19  1  0.000  0.200  0.099  1.0
  O  O20  1  0.500  0.609  0.797  1.0
  O  O21  1  0.500  0.795  0.405  1.0
  O  O22  1  0.500  0.991  0.993  1.0
  O  O23  1  0.500  0.197  0.601  1.0
  O  O24  1  0.500  0.408  0.204  1.0
[/CIF]
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