The material structure described by SrCa7Ti3Mn5O20 crystallizes in the triclinic P1 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(10), one O(14), one O(15), one O(17), one O(18), one O(2), one O(7), 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 7-coordinate geometry to one O(10), one O(14), one O(15), one O(18), one O(3), one O(6), and one O(8) atom. In the second Ca site, Ca(2) is bonded in a 7-coordinate geometry to one O(10), one O(16), one O(19), one O(20), one O(7), one O(8), and one O(9) atom. In the third Ca site, Ca(3) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(3), one O(6), and one O(9) atom. In the fourth Ca site, Ca(4) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(15), one O(17), one O(18), one O(2), and one O(4) atom. In the fifth Ca site, Ca(5) is bonded in a 8-coordinate geometry to one O(12), one O(13), one O(14), one O(15), one O(18), one O(3), one O(5), and one O(6) atom. In the sixth Ca site, Ca(6) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(16), one O(19), one O(20), and one O(4) atom. In the seventh Ca site, Ca(7) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(13), one O(3), one O(5), and one O(6) atom. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(14), one O(4), and one O(7) atom to form TiO4 tetrahedra that share  a cornercorner with one Ti(3)O4 tetrahedra,  a cornercorner with one Ti(2)O5 trigonal bipyramid, and  a cornercorner with one Mn(1)O5 trigonal bipyramid. In the second Ti site, Ti(2) is bonded to one O(1), one O(11), one O(15), one O(16), and one O(8) atom to form TiO5 trigonal bipyramids that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Ti(1)O4 tetrahedra, and corners with two equivalent Mn(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 20-44°. In the third Ti site, Ti(3) is bonded to one O(17), one O(19), one O(4), and one O(5) atom to form TiO4 tetrahedra that share  a cornercorner with one Ti(1)O4 tetrahedra,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and corners with two equivalent Mn(4)O5 trigonal bipyramids. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(12), one O(14), one O(2), one O(3), and one O(9) atom to form MnO5 trigonal bipyramids that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Ti(1)O4 tetrahedra, and corners with two equivalent Mn(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 22-37°. In the second Mn site, Mn(2) is bonded to one O(10), one O(13), one O(15), one O(16), one O(2), and one O(3) atom to form MnO6 octahedra that share corners with two equivalent Mn(5)O5 square pyramids, corners with two equivalent Ti(2)O5 trigonal bipyramids, and corners with two equivalent Mn(1)O5 trigonal bipyramids. In the third Mn site, Mn(3) is bonded to one O(11), one O(18), one O(20), one O(5), and one O(8) atom to form MnO5 trigonal bipyramids that share corners with two equivalent Mn(5)O5 square pyramids,  a cornercorner with one Ti(3)O4 tetrahedra, and corners with two equivalent Ti(2)O5 trigonal bipyramids. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(17), one O(19), one O(6), and one O(9) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Mn(5)O5 square pyramid, corners with two equivalent Ti(3)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(13), one O(18), one O(20), and one O(6) atom to form MnO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and corners with two equivalent Mn(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-8°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Ca(3), one Ca(7), one Ti(1), and one Ti(2) atom to form distorted OCa2Ti2 tetrahedra that share  a cornercorner with one O(13)Ca4Mn2 octahedra,  a cornercorner with one O(10)SrCa3Mn2 octahedra, and corners with two equivalent O(6)Ca4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 5-69°. In the second O site, O(2) is bonded to one Sr(1), one Ca(4), one Mn(1), and one Mn(2) atom to form distorted OSrCaMn2 tetrahedra that share corners with two equivalent O(18)SrCa3Mn2 octahedra, corners with two equivalent O(17)SrCaTiMn trigonal pyramids,  an edgeedge with one O(13)Ca4Mn2 octahedra, and  an edgeedge with one O(10)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 43-49°. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(1), and one Mn(2) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Ca(4), one Ca(6), one Ti(1), and one Ti(3) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to 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 Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(4), and one Mn(5) atom to form distorted OCa4Mn2 octahedra that share  a cornercorner with one O(20)Ca2Mn2 tetrahedra, corners with two equivalent O(1)Ca2Ti2 tetrahedra,  a cornercorner with one O(17)SrCaTiMn trigonal pyramid,  a faceface with one O(13)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra, and  a faceface with one O(18)SrCa3Mn2 octahedra. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(2), and one Ti(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ti(2), and one Mn(3) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Sr(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(4) 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(2), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(13)Ca4Mn2 octahedra,  a cornercorner with one O(1)Ca2Ti2 tetrahedra,  a cornercorner with one O(17)SrCaTiMn trigonal pyramid,  an edgeedge with one O(20)Ca2Mn2 tetrahedra,  an edgeedge with one O(2)SrCaMn2 tetrahedra,  a faceface with one O(6)Ca4Mn2 octahedra, and  a faceface with one O(18)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ca(4), one Ca(6), one Ti(2), and one Mn(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ca(5), one Ca(7), one Mn(1), and one Mn(4) atom. In the thirteenth O site, O(13) 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(10)SrCa3Mn2 octahedra,  a cornercorner with one O(1)Ca2Ti2 tetrahedra,  a cornercorner with one O(17)SrCaTiMn trigonal pyramid,  an edgeedge with one O(20)Ca2Mn2 tetrahedra,  an edgeedge with one O(2)SrCaMn2 tetrahedra,  a faceface with one O(6)Ca4Mn2 octahedra, and  a faceface with one O(18)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(1), one Ca(5), one Ti(1), and one Mn(1) atom. In the fifteenth O site, O(15) is bonded in a 4-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 sixteenth O site, O(16) is bonded in a distorted see-saw-like geometry to one Ca(2), one Ca(6), one Ti(2), and one Mn(2) atom. In the seventeenth O site, O(17) is bonded to one Sr(1), one Ca(4), one Ti(3), and one Mn(4) atom to form distorted OSrCaTiMn trigonal pyramids that share  a cornercorner with one O(13)Ca4Mn2 octahedra,  a cornercorner with one O(6)Ca4Mn2 octahedra,  a cornercorner with one O(10)SrCa3Mn2 octahedra, corners with two equivalent O(2)SrCaMn2 tetrahedra, and  an edgeedge with one O(18)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 62-71°. In the eighteenth O site, O(18) 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(20)Ca2Mn2 tetrahedra, corners with two equivalent O(2)SrCaMn2 tetrahedra,  an edgeedge with one O(17)SrCaTiMn trigonal pyramid,  a faceface with one O(13)Ca4Mn2 octahedra,  a faceface with one O(6)Ca4Mn2 octahedra, and  a faceface with one O(10)SrCa3Mn2 octahedra. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(6), one Ti(3), and one Mn(4) atom. In the twentieth O site, O(20) is bonded to one Ca(2), one Ca(6), one Mn(3), and one Mn(5) atom to form distorted OCa2Mn2 tetrahedra that share  a cornercorner with one O(6)Ca4Mn2 octahedra, corners with two equivalent O(18)SrCa3Mn2 octahedra,  an edgeedge with one O(13)Ca4Mn2 octahedra, and  an edgeedge with one O(10)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 16-78°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa7Ti3Mn5O20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.935
_cell_length_b   7.915
_cell_length_c   7.928
_cell_angle_alpha   90.953
_cell_angle_beta   90.724
_cell_angle_gamma   90.239
_symmetry_Int_Tables_number   1
_cell_volume   497.828
_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  0.233  0.250  0.257  1.0
  Ca  Ca1  1  0.232  0.284  0.687  1.0
  Ca  Ca2  1  0.248  0.743  0.273  1.0
  Ca  Ca3  1  0.232  0.695  0.771  1.0
  Ca  Ca4  1  0.736  0.257  0.293  1.0
  Ca  Ca5  1  0.734  0.305  0.717  1.0
  Ca  Ca6  1  0.733  0.755  0.292  1.0
  Ca  Ca7  1  0.733  0.700  0.759  1.0
  Ti  Ti8  1  0.998  0.023  0.966  1.0
  Ti  Ti9  1  0.987  0.987  0.531  1.0
  Ti  Ti10  1  0.562  0.007  0.003  1.0
  Mn  Mn11  1  0.989  0.482  0.007  1.0
  Mn  Mn12  1  0.987  0.510  0.487  1.0
  Mn  Mn13  1  0.497  0.005  0.519  1.0
  Mn  Mn14  1  0.487  0.500  0.013  1.0
  Mn  Mn15  1  0.485  0.514  0.500  1.0
  O  O16  1  0.979  0.905  0.759  1.0
  O  O17  1  0.969  0.418  0.238  1.0
  O  O18  1  0.993  0.545  0.764  1.0
  O  O19  1  0.790  0.015  0.078  1.0
  O  O20  1  0.570  0.008  0.776  1.0
  O  O21  1  0.470  0.517  0.759  1.0
  O  O22  1  0.165  0.953  0.095  1.0
  O  O23  1  0.225  0.030  0.508  1.0
  O  O24  1  0.232  0.548  0.042  1.0
  O  O25  1  0.243  0.499  0.483  1.0
  O  O26  1  0.757  0.002  0.443  1.0
  O  O27  1  0.743  0.494  0.985  1.0
  O  O28  1  0.729  0.527  0.505  1.0
  O  O29  1  0.056  0.233  0.923  1.0
  O  O30  1  0.967  0.234  0.552  1.0
  O  O31  1  0.999  0.776  0.417  1.0
  O  O32  1  0.491  0.213  0.089  1.0
  O  O33  1  0.505  0.266  0.486  1.0
  O  O34  1  0.513  0.794  0.072  1.0
  O  O35  1  0.483  0.754  0.450  1.0
[/CIF]
.
The material structure described by SrCa7Ti3Mn5O20 crystallizes in the triclinic P1 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(10), one O(14), one O(15), one O(17), one O(18), one O(2), one O(7), 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 7-coordinate geometry to one O(10), one O(14), one O(15), one O(18), one O(3), one O(6), and one O(8) atom. In the second Ca site, Ca(2) is bonded in a 7-coordinate geometry to one O(10), one O(16), one O(19), one O(20), one O(7), one O(8), and one O(9) atom. In the third Ca site, Ca(3) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(3), one O(6), and one O(9) atom. In the fourth Ca site, Ca(4) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(15), one O(17), one O(18), one O(2), and one O(4) atom. In the fifth Ca site, Ca(5) is bonded in a 8-coordinate geometry to one O(12), one O(13), one O(14), one O(15), one O(18), one O(3), one O(5), and one O(6) atom. In the sixth Ca site, Ca(6) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(16), one O(19), one O(20), and one O(4) atom. In the seventh Ca site, Ca(7) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(13), one O(3), one O(5), and one O(6) atom. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(14), one O(4), and one O(7) atom to form TiO4 tetrahedra that share  a cornercorner with one Ti(3)O4 tetrahedra,  a cornercorner with one Ti(2)O5 trigonal bipyramid, and  a cornercorner with one Mn(1)O5 trigonal bipyramid. In the second Ti site, Ti(2) is bonded to one O(1), one O(11), one O(15), one O(16), and one O(8) atom to form TiO5 trigonal bipyramids that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Ti(1)O4 tetrahedra, and corners with two equivalent Mn(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 20-44°. In the third Ti site, Ti(3) is bonded to one O(17), one O(19), one O(4), and one O(5) atom to form TiO4 tetrahedra that share  a cornercorner with one Ti(1)O4 tetrahedra,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and corners with two equivalent Mn(4)O5 trigonal bipyramids. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(12), one O(14), one O(2), one O(3), and one O(9) atom to form MnO5 trigonal bipyramids that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Ti(1)O4 tetrahedra, and corners with two equivalent Mn(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 22-37°. In the second Mn site, Mn(2) is bonded to one O(10), one O(13), one O(15), one O(16), one O(2), and one O(3) atom to form MnO6 octahedra that share corners with two equivalent Mn(5)O5 square pyramids, corners with two equivalent Ti(2)O5 trigonal bipyramids, and corners with two equivalent Mn(1)O5 trigonal bipyramids. In the third Mn site, Mn(3) is bonded to one O(11), one O(18), one O(20), one O(5), and one O(8) atom to form MnO5 trigonal bipyramids that share corners with two equivalent Mn(5)O5 square pyramids,  a cornercorner with one Ti(3)O4 tetrahedra, and corners with two equivalent Ti(2)O5 trigonal bipyramids. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(17), one O(19), one O(6), and one O(9) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Mn(5)O5 square pyramid, corners with two equivalent Ti(3)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(13), one O(18), one O(20), and one O(6) atom to form MnO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and corners with two equivalent Mn(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-8°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Ca(3), one Ca(7), one Ti(1), and one Ti(2) atom to form distorted OCa2Ti2 tetrahedra that share  a cornercorner with one O(13)Ca4Mn2 octahedra,  a cornercorner with one O(10)SrCa3Mn2 octahedra, and corners with two equivalent O(6)Ca4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 5-69°. In the second O site, O(2) is bonded to one Sr(1), one Ca(4), one Mn(1), and one Mn(2) atom to form distorted OSrCaMn2 tetrahedra that share corners with two equivalent O(18)SrCa3Mn2 octahedra, corners with two equivalent O(17)SrCaTiMn trigonal pyramids,  an edgeedge with one O(13)Ca4Mn2 octahedra, and  an edgeedge with one O(10)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 43-49°. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(1), and one Mn(2) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Ca(4), one Ca(6), one Ti(1), and one Ti(3) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to 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 Ca(1), one Ca(3), one Ca(5), one Ca(7), one Mn(4), and one Mn(5) atom to form distorted OCa4Mn2 octahedra that share  a cornercorner with one O(20)Ca2Mn2 tetrahedra, corners with two equivalent O(1)Ca2Ti2 tetrahedra,  a cornercorner with one O(17)SrCaTiMn trigonal pyramid,  a faceface with one O(13)Ca4Mn2 octahedra,  a faceface with one O(10)SrCa3Mn2 octahedra, and  a faceface with one O(18)SrCa3Mn2 octahedra. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(2), and one Ti(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ti(2), and one Mn(3) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Sr(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(4) 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(2), and one Mn(5) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(13)Ca4Mn2 octahedra,  a cornercorner with one O(1)Ca2Ti2 tetrahedra,  a cornercorner with one O(17)SrCaTiMn trigonal pyramid,  an edgeedge with one O(20)Ca2Mn2 tetrahedra,  an edgeedge with one O(2)SrCaMn2 tetrahedra,  a faceface with one O(6)Ca4Mn2 octahedra, and  a faceface with one O(18)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Ca(4), one Ca(6), one Ti(2), and one Mn(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ca(5), one Ca(7), one Mn(1), and one Mn(4) atom. In the thirteenth O site, O(13) 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(10)SrCa3Mn2 octahedra,  a cornercorner with one O(1)Ca2Ti2 tetrahedra,  a cornercorner with one O(17)SrCaTiMn trigonal pyramid,  an edgeedge with one O(20)Ca2Mn2 tetrahedra,  an edgeedge with one O(2)SrCaMn2 tetrahedra,  a faceface with one O(6)Ca4Mn2 octahedra, and  a faceface with one O(18)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(1), one Ca(5), one Ti(1), and one Mn(1) atom. In the fifteenth O site, O(15) is bonded in a 4-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 sixteenth O site, O(16) is bonded in a distorted see-saw-like geometry to one Ca(2), one Ca(6), one Ti(2), and one Mn(2) atom. In the seventeenth O site, O(17) is bonded to one Sr(1), one Ca(4), one Ti(3), and one Mn(4) atom to form distorted OSrCaTiMn trigonal pyramids that share  a cornercorner with one O(13)Ca4Mn2 octahedra,  a cornercorner with one O(6)Ca4Mn2 octahedra,  a cornercorner with one O(10)SrCa3Mn2 octahedra, corners with two equivalent O(2)SrCaMn2 tetrahedra, and  an edgeedge with one O(18)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 62-71°. In the eighteenth O site, O(18) 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(20)Ca2Mn2 tetrahedra, corners with two equivalent O(2)SrCaMn2 tetrahedra,  an edgeedge with one O(17)SrCaTiMn trigonal pyramid,  a faceface with one O(13)Ca4Mn2 octahedra,  a faceface with one O(6)Ca4Mn2 octahedra, and  a faceface with one O(10)SrCa3Mn2 octahedra. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(6), one Ti(3), and one Mn(4) atom. In the twentieth O site, O(20) is bonded to one Ca(2), one Ca(6), one Mn(3), and one Mn(5) atom to form distorted OCa2Mn2 tetrahedra that share  a cornercorner with one O(6)Ca4Mn2 octahedra, corners with two equivalent O(18)SrCa3Mn2 octahedra,  an edgeedge with one O(13)Ca4Mn2 octahedra, and  an edgeedge with one O(10)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 16-78°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa7Ti3Mn5O20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.935
_cell_length_b   7.915
_cell_length_c   7.928
_cell_angle_alpha   90.953
_cell_angle_beta   90.724
_cell_angle_gamma   90.239
_symmetry_Int_Tables_number   1
_cell_volume   497.828
_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  0.233  0.250  0.257  1.0
  Ca  Ca1  1  0.232  0.284  0.687  1.0
  Ca  Ca2  1  0.248  0.743  0.273  1.0
  Ca  Ca3  1  0.232  0.695  0.771  1.0
  Ca  Ca4  1  0.736  0.257  0.293  1.0
  Ca  Ca5  1  0.734  0.305  0.717  1.0
  Ca  Ca6  1  0.733  0.755  0.292  1.0
  Ca  Ca7  1  0.733  0.700  0.759  1.0
  Ti  Ti8  1  0.998  0.023  0.966  1.0
  Ti  Ti9  1  0.987  0.987  0.531  1.0
  Ti  Ti10  1  0.562  0.007  0.003  1.0
  Mn  Mn11  1  0.989  0.482  0.007  1.0
  Mn  Mn12  1  0.987  0.510  0.487  1.0
  Mn  Mn13  1  0.497  0.005  0.519  1.0
  Mn  Mn14  1  0.487  0.500  0.013  1.0
  Mn  Mn15  1  0.485  0.514  0.500  1.0
  O  O16  1  0.979  0.905  0.759  1.0
  O  O17  1  0.969  0.418  0.238  1.0
  O  O18  1  0.993  0.545  0.764  1.0
  O  O19  1  0.790  0.015  0.078  1.0
  O  O20  1  0.570  0.008  0.776  1.0
  O  O21  1  0.470  0.517  0.759  1.0
  O  O22  1  0.165  0.953  0.095  1.0
  O  O23  1  0.225  0.030  0.508  1.0
  O  O24  1  0.232  0.548  0.042  1.0
  O  O25  1  0.243  0.499  0.483  1.0
  O  O26  1  0.757  0.002  0.443  1.0
  O  O27  1  0.743  0.494  0.985  1.0
  O  O28  1  0.729  0.527  0.505  1.0
  O  O29  1  0.056  0.233  0.923  1.0
  O  O30  1  0.967  0.234  0.552  1.0
  O  O31  1  0.999  0.776  0.417  1.0
  O  O32  1  0.491  0.213  0.089  1.0
  O  O33  1  0.505  0.266  0.486  1.0
  O  O34  1  0.513  0.794  0.072  1.0
  O  O35  1  0.483  0.754  0.450  1.0
[/CIF]
.