The crystal structure described by SrCa7Ti3Mn5O23 crystallizes in the triclinic P1 space group. Sr(1) is bonded in a distorted q6 geometry to one O(10), one O(11), one O(16), one O(17), one O(2), one O(20), one O(21), one O(4), one O(6), one O(8), and one O(9) atom. There are seven inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 12-coordinate geometry to one O(1), one O(10), one O(11), one O(16), one O(17), one O(20), one O(21), one O(3), one O(5), one O(7), one O(8), and one O(9) atom. In the second Ca site, Ca(2) is bonded in a distorted q6 geometry to one O(10), one O(11), one O(18), one O(19), one O(2), one O(22), one O(23), one O(4), one O(6), one O(8), and one O(9) atom. In the third Ca site, Ca(3) is bonded to one O(1), one O(10), one O(11), one O(18), one O(19), one O(22), one O(23), one O(3), one O(5), one O(7), one O(8), and one O(9) atom to form distorted CaO12 cuboctahedra that share  a faceface with one Ti(3)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra,  a faceface with one Mn(4)O6 octahedra,  a faceface with one Mn(5)O6 octahedra,  a faceface with one Ti(1)O5 square pyramid, and  a faceface with one Ti(2)O5 square pyramid. In the fourth Ca site, Ca(4) is bonded in a distorted q6 geometry to one O(12), one O(13), one O(14), one O(15), one O(16), one O(17), one O(2), one O(20), one O(21), one O(4), and one O(6) atom. In the fifth Ca site, Ca(5) is bonded in a 12-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(15), one O(16), one O(17), one O(20), one O(21), one O(3), one O(5), and one O(7) atom. In the sixth Ca site, Ca(6) is bonded in a distorted q6 geometry to one O(12), one O(13), one O(14), one O(15), one O(18), one O(19), one O(2), one O(22), one O(23), one O(4), and one O(6) atom. In the seventh Ca site, Ca(7) is bonded in a 12-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(15), one O(18), one O(19), one O(22), one O(23), one O(3), one O(5), and one O(7) atom. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(12), one O(16), one O(18), and one O(8) atom to form TiO5 square pyramids that share corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Ti(2)O5 square pyramid, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 11-17°. In the second Ti site, Ti(2) is bonded to one O(1), one O(13), one O(17), one O(19), and one O(9) atom to form TiO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Ti(1)O5 square pyramid, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 11-14°. In the third Ti site, Ti(3) is bonded to one O(12), one O(20), one O(22), one O(4), one O(5), and one O(8) atom to form TiO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Ti(1)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(14), one O(16), one O(18), one O(2), and one O(3) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Ti(1)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the second Mn site, Mn(2) is bonded to one O(11), one O(15), one O(17), one O(19), one O(2), and one O(3) atom to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Ti(2)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the third Mn site, Mn(3) is bonded to one O(13), one O(21), one O(23), one O(4), one O(5), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Ti(2)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(14), one O(20), one O(22), one O(6), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the fifth Mn site, Mn(5) is bonded to one O(11), one O(15), one O(21), one O(23), one O(6), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. There are twenty-three inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), one Ca(4), one Ca(6), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(1), and one Mn(2) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra, corners with two equivalent O(20)SrCa3TiMn octahedra, edges with two equivalent O(7)Ca4Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra, and  a faceface with one O(11)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), one Ca(4), one Ca(6), one Ti(3), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Ti(3), and one Mn(3) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Ca(2), one Ca(4), one Ca(6), one Mn(4), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(7)Ca4Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles are 1°. In the seventh O site, O(7) is bonded to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(4), and one Mn(5) atom to form OCa4Mn2 octahedra that share corners with two equivalent O(6)SrCa3Mn2 octahedra, edges with two equivalent O(3)Ca4Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles are 1°. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Ti(1), and one Ti(3) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Ti(2), and one Mn(3) atom. In the tenth O site, O(10) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(4) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(14)Ca4Mn2 octahedra, corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra, edges with two equivalent O(11)SrCa3Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(6)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles range from 3-56°. In the eleventh O site, O(11) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(2), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(15)Ca4Mn2 octahedra, corners with two equivalent O(20)SrCa3TiMn octahedra, edges with two equivalent O(10)SrCa3Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-56°. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Ti(1), and one Ti(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Ti(2), and one Mn(3) atom. In the fourteenth O site, O(14) is bonded to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Mn(1), and one Mn(4) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(10)SrCa3Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra, edges with two equivalent O(15)Ca4Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(6)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles range from 3-53°. In the fifteenth O site, O(15) is bonded to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Mn(2), and one Mn(5) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(11)SrCa3Mn2 octahedra, corners with two equivalent O(20)SrCa3TiMn octahedra, edges with two equivalent O(14)Ca4Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-53°. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Ti(1), and one Mn(1) atom. In the seventeenth O site, O(17) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Ti(2), and one Mn(2) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Ti(1), and one Mn(1) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Ti(2), and one Mn(2) atom. In the twentieth O site, O(20) is bonded to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Ti(3), and one Mn(4) atom to form distorted OSrCa3TiMn octahedra that share corners with two equivalent O(15)Ca4Mn2 octahedra, corners with two equivalent O(3)Ca4Mn2 octahedra, corners with two equivalent O(11)SrCa3Mn2 octahedra, edges with two equivalent O(21)SrCa3Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 51-56°. In the twenty-first O site, O(21) is bonded to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Mn(3), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(14)Ca4Mn2 octahedra, corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(3)Ca4Mn2 octahedra, corners with two equivalent O(10)SrCa3Mn2 octahedra, edges with two equivalent O(20)SrCa3TiMn octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-56°. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Ti(3), and one Mn(4) atom. In the twenty-third O site, O(23) is bonded to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Mn(3), and one Mn(5) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(14)Ca4Mn2 octahedra, corners with two equivalent O(3)Ca4Mn2 octahedra, corners with two equivalent O(10)SrCa3Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-54°. is represented by the CIF file [CIF]
data_SrCa7Ti3Mn5O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.733
_cell_length_b   7.706
_cell_length_c   7.740
_cell_angle_alpha   89.974
_cell_angle_beta   90.047
_cell_angle_gamma   89.978
_symmetry_Int_Tables_number   1
_cell_volume   461.273
_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
  Sr  Sr0  1  0.257  0.260  0.250  1.0
  Ca  Ca1  1  0.269  0.279  0.747  1.0
  Ca  Ca2  1  0.263  0.731  0.252  1.0
  Ca  Ca3  1  0.268  0.724  0.746  1.0
  Ca  Ca4  1  0.739  0.272  0.252  1.0
  Ca  Ca5  1  0.733  0.278  0.746  1.0
  Ca  Ca6  1  0.739  0.731  0.252  1.0
  Ca  Ca7  1  0.733  0.722  0.746  1.0
  Ti  Ti8  1  1.000  0.999  0.986  1.0
  Ti  Ti9  1  0.999  0.999  0.514  1.0
  Ti  Ti10  1  0.503  0.999  0.004  1.0
  Mn  Mn11  1  0.999  0.501  0.003  1.0
  Mn  Mn12  1  0.999  0.501  0.495  1.0
  Mn  Mn13  1  0.501  0.999  0.496  1.0
  Mn  Mn14  1  0.501  0.500  0.000  1.0
  Mn  Mn15  1  0.500  0.501  0.498  1.0
  O  O16  1  0.997  0.997  0.749  1.0
  O  O17  1  0.996  0.501  0.250  1.0
  O  O18  1  0.998  0.502  0.749  1.0
  O  O19  1  0.499  0.999  0.253  1.0
  O  O20  1  0.502  0.998  0.750  1.0
  O  O21  1  0.504  0.504  0.249  1.0
  O  O22  1  0.501  0.501  0.750  1.0
  O  O23  1  0.242  0.998  0.028  1.0
  O  O24  1  0.245  0.998  0.481  1.0
  O  O25  1  0.251  0.504  0.992  1.0
  O  O26  1  0.250  0.504  0.508  1.0
  O  O27  1  0.757  0.999  0.033  1.0
  O  O28  1  0.755  0.999  0.476  1.0
  O  O29  1  0.749  0.501  0.995  1.0
  O  O30  1  0.750  0.501  0.505  1.0
  O  O31  1  0.998  0.245  0.018  1.0
  O  O32  1  0.997  0.245  0.480  1.0
  O  O33  1  0.999  0.755  0.022  1.0
  O  O34  1  0.999  0.755  0.475  1.0
  O  O35  1  0.502  0.252  0.994  1.0
  O  O36  1  0.504  0.250  0.507  1.0
  O  O37  1  0.501  0.748  0.996  1.0
  O  O38  1  0.501  0.750  0.504  1.0
[/CIF]
.
The crystal structure described by SrCa7Ti3Mn5O23 crystallizes in the triclinic P1 space group. Sr(1) is bonded in a distorted q6 geometry to one O(10), one O(11), one O(16), one O(17), one O(2), one O(20), one O(21), one O(4), one O(6), one O(8), and one O(9) atom. There are seven inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 12-coordinate geometry to one O(1), one O(10), one O(11), one O(16), one O(17), one O(20), one O(21), one O(3), one O(5), one O(7), one O(8), and one O(9) atom. In the second Ca site, Ca(2) is bonded in a distorted q6 geometry to one O(10), one O(11), one O(18), one O(19), one O(2), one O(22), one O(23), one O(4), one O(6), one O(8), and one O(9) atom. In the third Ca site, Ca(3) is bonded to one O(1), one O(10), one O(11), one O(18), one O(19), one O(22), one O(23), one O(3), one O(5), one O(7), one O(8), and one O(9) atom to form distorted CaO12 cuboctahedra that share  a faceface with one Ti(3)O6 octahedra,  a faceface with one Mn(1)O6 octahedra,  a faceface with one Mn(2)O6 octahedra,  a faceface with one Mn(3)O6 octahedra,  a faceface with one Mn(4)O6 octahedra,  a faceface with one Mn(5)O6 octahedra,  a faceface with one Ti(1)O5 square pyramid, and  a faceface with one Ti(2)O5 square pyramid. In the fourth Ca site, Ca(4) is bonded in a distorted q6 geometry to one O(12), one O(13), one O(14), one O(15), one O(16), one O(17), one O(2), one O(20), one O(21), one O(4), and one O(6) atom. In the fifth Ca site, Ca(5) is bonded in a 12-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(15), one O(16), one O(17), one O(20), one O(21), one O(3), one O(5), and one O(7) atom. In the sixth Ca site, Ca(6) is bonded in a distorted q6 geometry to one O(12), one O(13), one O(14), one O(15), one O(18), one O(19), one O(2), one O(22), one O(23), one O(4), and one O(6) atom. In the seventh Ca site, Ca(7) is bonded in a 12-coordinate geometry to one O(1), one O(12), one O(13), one O(14), one O(15), one O(18), one O(19), one O(22), one O(23), one O(3), one O(5), and one O(7) atom. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(12), one O(16), one O(18), and one O(8) atom to form TiO5 square pyramids that share corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Ti(2)O5 square pyramid, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 11-17°. In the second Ti site, Ti(2) is bonded to one O(1), one O(13), one O(17), one O(19), and one O(9) atom to form TiO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Ti(1)O5 square pyramid, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 11-14°. In the third Ti site, Ti(3) is bonded to one O(12), one O(20), one O(22), one O(4), one O(5), and one O(8) atom to form TiO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Ti(1)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(14), one O(16), one O(18), one O(2), and one O(3) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with two equivalent Ti(1)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the second Mn site, Mn(2) is bonded to one O(11), one O(15), one O(17), one O(19), one O(2), and one O(3) atom to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Ti(2)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the third Mn site, Mn(3) is bonded to one O(13), one O(21), one O(23), one O(4), one O(5), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with two equivalent Ti(2)O5 square pyramids, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(14), one O(20), one O(22), one O(6), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Ti(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. In the fifth Mn site, Mn(5) is bonded to one O(11), one O(15), one O(21), one O(23), one O(6), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and  a faceface with one Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-5°. There are twenty-three inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), one Ca(4), one Ca(6), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(1), and one Mn(2) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra, corners with two equivalent O(20)SrCa3TiMn octahedra, edges with two equivalent O(7)Ca4Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra, and  a faceface with one O(11)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), one Ca(4), one Ca(6), one Ti(3), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a distorted linear geometry to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Ti(3), and one Mn(3) atom. In the sixth O site, O(6) is bonded to one Sr(1), one Ca(2), one Ca(4), one Ca(6), one Mn(4), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(7)Ca4Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles are 1°. In the seventh O site, O(7) is bonded to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(4), and one Mn(5) atom to form OCa4Mn2 octahedra that share corners with two equivalent O(6)SrCa3Mn2 octahedra, edges with two equivalent O(3)Ca4Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles are 1°. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Ti(1), and one Ti(3) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Ti(2), and one Mn(3) atom. In the tenth O site, O(10) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(4) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(14)Ca4Mn2 octahedra, corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra, edges with two equivalent O(11)SrCa3Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(6)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles range from 3-56°. In the eleventh O site, O(11) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(2), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(15)Ca4Mn2 octahedra, corners with two equivalent O(20)SrCa3TiMn octahedra, edges with two equivalent O(10)SrCa3Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-56°. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Ti(1), and one Ti(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Ti(2), and one Mn(3) atom. In the fourteenth O site, O(14) is bonded to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Mn(1), and one Mn(4) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(10)SrCa3Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra, edges with two equivalent O(15)Ca4Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(6)SrCa3Mn2 octahedra, and  a faceface with one O(20)SrCa3TiMn octahedra. The corner-sharing octahedral tilt angles range from 3-53°. In the fifteenth O site, O(15) is bonded to one Ca(4), one Ca(5), one Ca(6), one Ca(7), one Mn(2), and one Mn(5) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(11)SrCa3Mn2 octahedra, corners with two equivalent O(20)SrCa3TiMn octahedra, edges with two equivalent O(14)Ca4Mn2 octahedra,  a faceface with one O(23)Ca4Mn2 octahedra,  a faceface with one O(3)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(21)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-53°. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Ti(1), and one Mn(1) atom. In the seventeenth O site, O(17) is bonded in a 2-coordinate geometry to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Ti(2), and one Mn(2) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Ti(1), and one Mn(1) atom. In the nineteenth O site, O(19) is bonded in a 2-coordinate geometry to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Ti(2), and one Mn(2) atom. In the twentieth O site, O(20) is bonded to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Ti(3), and one Mn(4) atom to form distorted OSrCa3TiMn octahedra that share corners with two equivalent O(15)Ca4Mn2 octahedra, corners with two equivalent O(3)Ca4Mn2 octahedra, corners with two equivalent O(11)SrCa3Mn2 octahedra, edges with two equivalent O(21)SrCa3Mn2 octahedra,  a faceface with one O(14)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 51-56°. In the twenty-first O site, O(21) is bonded to one Sr(1), one Ca(1), one Ca(4), one Ca(5), one Mn(3), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(14)Ca4Mn2 octahedra, corners with two equivalent O(23)Ca4Mn2 octahedra, corners with two equivalent O(3)Ca4Mn2 octahedra, corners with two equivalent O(10)SrCa3Mn2 octahedra, edges with two equivalent O(20)SrCa3TiMn octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-56°. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Ti(3), and one Mn(4) atom. In the twenty-third O site, O(23) is bonded to one Ca(2), one Ca(3), one Ca(6), one Ca(7), one Mn(3), and one Mn(5) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(14)Ca4Mn2 octahedra, corners with two equivalent O(3)Ca4Mn2 octahedra, corners with two equivalent O(10)SrCa3Mn2 octahedra, corners with two equivalent O(21)SrCa3Mn2 octahedra,  a faceface with one O(15)Ca4Mn2 octahedra,  a faceface with one O(7)Ca4Mn2 octahedra,  a faceface with one O(11)SrCa3Mn2 octahedra, and  a faceface with one O(6)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 4-54°. is represented by the CIF file [CIF]
data_SrCa7Ti3Mn5O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.733
_cell_length_b   7.706
_cell_length_c   7.740
_cell_angle_alpha   89.974
_cell_angle_beta   90.047
_cell_angle_gamma   89.978
_symmetry_Int_Tables_number   1
_cell_volume   461.273
_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
  Sr  Sr0  1  0.257  0.260  0.250  1.0
  Ca  Ca1  1  0.269  0.279  0.747  1.0
  Ca  Ca2  1  0.263  0.731  0.252  1.0
  Ca  Ca3  1  0.268  0.724  0.746  1.0
  Ca  Ca4  1  0.739  0.272  0.252  1.0
  Ca  Ca5  1  0.733  0.278  0.746  1.0
  Ca  Ca6  1  0.739  0.731  0.252  1.0
  Ca  Ca7  1  0.733  0.722  0.746  1.0
  Ti  Ti8  1  1.000  0.999  0.986  1.0
  Ti  Ti9  1  0.999  0.999  0.514  1.0
  Ti  Ti10  1  0.503  0.999  0.004  1.0
  Mn  Mn11  1  0.999  0.501  0.003  1.0
  Mn  Mn12  1  0.999  0.501  0.495  1.0
  Mn  Mn13  1  0.501  0.999  0.496  1.0
  Mn  Mn14  1  0.501  0.500  0.000  1.0
  Mn  Mn15  1  0.500  0.501  0.498  1.0
  O  O16  1  0.997  0.997  0.749  1.0
  O  O17  1  0.996  0.501  0.250  1.0
  O  O18  1  0.998  0.502  0.749  1.0
  O  O19  1  0.499  0.999  0.253  1.0
  O  O20  1  0.502  0.998  0.750  1.0
  O  O21  1  0.504  0.504  0.249  1.0
  O  O22  1  0.501  0.501  0.750  1.0
  O  O23  1  0.242  0.998  0.028  1.0
  O  O24  1  0.245  0.998  0.481  1.0
  O  O25  1  0.251  0.504  0.992  1.0
  O  O26  1  0.250  0.504  0.508  1.0
  O  O27  1  0.757  0.999  0.033  1.0
  O  O28  1  0.755  0.999  0.476  1.0
  O  O29  1  0.749  0.501  0.995  1.0
  O  O30  1  0.750  0.501  0.505  1.0
  O  O31  1  0.998  0.245  0.018  1.0
  O  O32  1  0.997  0.245  0.480  1.0
  O  O33  1  0.999  0.755  0.022  1.0
  O  O34  1  0.999  0.755  0.475  1.0
  O  O35  1  0.502  0.252  0.994  1.0
  O  O36  1  0.504  0.250  0.507  1.0
  O  O37  1  0.501  0.748  0.996  1.0
  O  O38  1  0.501  0.750  0.504  1.0
[/CIF]
.