The structure described by Sr3Ca5Mn8O23 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 11-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(12), two equivalent O(14), two equivalent O(8), and two equivalent O(9) atoms. In the second Sr site, Sr(2) is bonded in a 11-coordinate geometry to one O(3), one O(5), one O(7), two equivalent O(12), two equivalent O(14), two equivalent O(8), and two equivalent O(9) atoms. In the third Sr site, Sr(3) is bonded in a 11-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(10), two equivalent O(11), two equivalent O(12), and two equivalent O(14) atoms. There are five inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 6-coordinate geometry to one O(4), one O(6), two equivalent O(13), two equivalent O(8), and two equivalent O(9) atoms. In the second Ca site, Ca(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(7), two equivalent O(15), two equivalent O(8), and two equivalent O(9) atoms. In the third Ca site, Ca(3) is bonded in a 9-coordinate geometry to one O(3), one O(5), one O(7), two equivalent O(11), two equivalent O(12), and two equivalent O(14) atoms. In the fourth Ca site, Ca(4) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(10), two equivalent O(11), and two equivalent O(13) atoms. In the fifth Ca site, Ca(5) is bonded in a 10-coordinate geometry to one O(1), one O(3), one O(5), one O(7), two equivalent O(10), two equivalent O(11), and two equivalent O(15) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(12), one O(13), and one O(8) atom to form MnO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, and  a cornercorner with one Mn(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 8-34°. In the second Mn site, Mn(2) is bonded to one O(11), one O(12), one O(13), one O(2), one O(3), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and corners with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 8-22°. In the third Mn site, Mn(3) is bonded to one O(10), one O(14), one O(15), one O(4), one O(5), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and corners with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 14-24°. In the fourth Mn site, Mn(4) is bonded to one O(11), one O(14), one O(15), one O(6), one O(7), and one O(9) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 8-22°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(5), and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(3), one Ca(4), and two equivalent Mn(2) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(2), one Ca(2), one Ca(3), one Ca(5), and two equivalent Mn(2) atoms. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(3), one Ca(1), one Ca(4), and two equivalent Mn(3) atoms. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Sr(2), one Ca(3), one Ca(5), and two equivalent Mn(3) atoms. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Ca(1), one Ca(4), and two equivalent Mn(4) atoms. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Sr(2), one Ca(2), one Ca(3), one Ca(5), and two equivalent Mn(4) atoms. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Ca(1), one Ca(2), one Mn(1), and one Mn(3) atom. In the ninth O site, O(9) is bonded to one Sr(1), one Sr(2), one Ca(1), one Ca(2), one Mn(2), and one Mn(4) atom to form distorted edge-sharing OSr2Ca2Mn2 octahedra. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Sr(3), one Ca(4), one Ca(5), one Mn(1), and one Mn(3) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Sr(3), one Ca(3), one Ca(4), one Ca(5), one Mn(2), and one Mn(4) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Ca(3), one Mn(1), and one Mn(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(4), one Mn(1), and one Mn(2) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Ca(3), one Mn(3), and one Mn(4) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(5), one Mn(3), and one Mn(4) atom. is represented by the CIF card [CIF]
data_Sr3Ca5Mn8O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.733
_cell_length_b   7.650
_cell_length_c   7.666
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   89.906
_symmetry_Int_Tables_number   1
_cell_volume   453.541
_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  0.262  0.254  0.250  1.0
  Sr  Sr1  1  0.249  0.255  0.750  1.0
  Sr  Sr2  1  0.745  0.255  0.250  1.0
  Ca  Ca3  1  0.264  0.736  0.250  1.0
  Ca  Ca4  1  0.255  0.743  0.750  1.0
  Ca  Ca5  1  0.742  0.276  0.750  1.0
  Ca  Ca6  1  0.751  0.744  0.250  1.0
  Ca  Ca7  1  0.730  0.742  0.750  1.0
  Mn  Mn8  1  0.995  0.992  0.984  1.0
  Mn  Mn9  1  0.995  0.992  0.516  1.0
  Mn  Mn10  1  1.000  0.506  0.001  1.0
  Mn  Mn11  1  1.000  0.506  0.499  1.0
  Mn  Mn12  1  0.504  0.999  0.000  1.0
  Mn  Mn13  1  0.504  0.999  0.500  1.0
  Mn  Mn14  1  0.502  0.506  0.999  1.0
  Mn  Mn15  1  0.502  0.506  0.501  1.0
  O  O16  1  0.978  0.930  0.750  1.0
  O  O17  1  0.988  0.458  0.250  1.0
  O  O18  1  0.019  0.546  0.750  1.0
  O  O19  1  0.476  0.960  0.250  1.0
  O  O20  1  0.541  0.036  0.750  1.0
  O  O21  1  0.518  0.541  0.250  1.0
  O  O22  1  0.491  0.471  0.750  1.0
  O  O23  1  0.246  0.013  0.992  1.0
  O  O24  1  0.246  0.013  0.508  1.0
  O  O25  1  0.251  0.499  0.016  1.0
  O  O26  1  0.251  0.499  0.484  1.0
  O  O27  1  0.755  0.982  0.045  1.0
  O  O28  1  0.755  0.982  0.455  1.0
  O  O29  1  0.751  0.522  0.978  1.0
  O  O30  1  0.751  0.522  0.522  1.0
  O  O31  1  0.979  0.246  0.967  1.0
  O  O32  1  0.979  0.246  0.533  1.0
  O  O33  1  0.013  0.756  0.064  1.0
  O  O34  1  0.013  0.756  0.436  1.0
  O  O35  1  0.511  0.252  0.029  1.0
  O  O36  1  0.511  0.252  0.471  1.0
  O  O37  1  0.487  0.754  0.954  1.0
  O  O38  1  0.487  0.754  0.546  1.0
[/CIF]
.
The structure described by Sr3Ca5Mn8O23 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 11-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(12), two equivalent O(14), two equivalent O(8), and two equivalent O(9) atoms. In the second Sr site, Sr(2) is bonded in a 11-coordinate geometry to one O(3), one O(5), one O(7), two equivalent O(12), two equivalent O(14), two equivalent O(8), and two equivalent O(9) atoms. In the third Sr site, Sr(3) is bonded in a 11-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(10), two equivalent O(11), two equivalent O(12), and two equivalent O(14) atoms. There are five inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 6-coordinate geometry to one O(4), one O(6), two equivalent O(13), two equivalent O(8), and two equivalent O(9) atoms. In the second Ca site, Ca(2) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(7), two equivalent O(15), two equivalent O(8), and two equivalent O(9) atoms. In the third Ca site, Ca(3) is bonded in a 9-coordinate geometry to one O(3), one O(5), one O(7), two equivalent O(11), two equivalent O(12), and two equivalent O(14) atoms. In the fourth Ca site, Ca(4) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(10), two equivalent O(11), and two equivalent O(13) atoms. In the fifth Ca site, Ca(5) is bonded in a 10-coordinate geometry to one O(1), one O(3), one O(5), one O(7), two equivalent O(10), two equivalent O(11), and two equivalent O(15) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(12), one O(13), and one O(8) atom to form MnO5 square pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, and  a cornercorner with one Mn(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 8-34°. In the second Mn site, Mn(2) is bonded to one O(11), one O(12), one O(13), one O(2), one O(3), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and corners with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 8-22°. In the third Mn site, Mn(3) is bonded to one O(10), one O(14), one O(15), one O(4), one O(5), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, and corners with two equivalent Mn(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 14-24°. In the fourth Mn site, Mn(4) is bonded to one O(11), one O(14), one O(15), one O(6), one O(7), and one O(9) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 8-22°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(5), and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(3), one Ca(4), and two equivalent Mn(2) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(2), one Ca(2), one Ca(3), one Ca(5), and two equivalent Mn(2) atoms. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(3), one Ca(1), one Ca(4), and two equivalent Mn(3) atoms. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Sr(2), one Ca(3), one Ca(5), and two equivalent Mn(3) atoms. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Ca(1), one Ca(4), and two equivalent Mn(4) atoms. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Sr(2), one Ca(2), one Ca(3), one Ca(5), and two equivalent Mn(4) atoms. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Ca(1), one Ca(2), one Mn(1), and one Mn(3) atom. In the ninth O site, O(9) is bonded to one Sr(1), one Sr(2), one Ca(1), one Ca(2), one Mn(2), and one Mn(4) atom to form distorted edge-sharing OSr2Ca2Mn2 octahedra. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Sr(3), one Ca(4), one Ca(5), one Mn(1), and one Mn(3) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Sr(3), one Ca(3), one Ca(4), one Ca(5), one Mn(2), and one Mn(4) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Ca(3), one Mn(1), and one Mn(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Ca(1), one Ca(4), one Mn(1), and one Mn(2) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Ca(3), one Mn(3), and one Mn(4) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(5), one Mn(3), and one Mn(4) atom. is represented by the CIF card [CIF]
data_Sr3Ca5Mn8O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.733
_cell_length_b   7.650
_cell_length_c   7.666
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   89.906
_symmetry_Int_Tables_number   1
_cell_volume   453.541
_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  0.262  0.254  0.250  1.0
  Sr  Sr1  1  0.249  0.255  0.750  1.0
  Sr  Sr2  1  0.745  0.255  0.250  1.0
  Ca  Ca3  1  0.264  0.736  0.250  1.0
  Ca  Ca4  1  0.255  0.743  0.750  1.0
  Ca  Ca5  1  0.742  0.276  0.750  1.0
  Ca  Ca6  1  0.751  0.744  0.250  1.0
  Ca  Ca7  1  0.730  0.742  0.750  1.0
  Mn  Mn8  1  0.995  0.992  0.984  1.0
  Mn  Mn9  1  0.995  0.992  0.516  1.0
  Mn  Mn10  1  1.000  0.506  0.001  1.0
  Mn  Mn11  1  1.000  0.506  0.499  1.0
  Mn  Mn12  1  0.504  0.999  0.000  1.0
  Mn  Mn13  1  0.504  0.999  0.500  1.0
  Mn  Mn14  1  0.502  0.506  0.999  1.0
  Mn  Mn15  1  0.502  0.506  0.501  1.0
  O  O16  1  0.978  0.930  0.750  1.0
  O  O17  1  0.988  0.458  0.250  1.0
  O  O18  1  0.019  0.546  0.750  1.0
  O  O19  1  0.476  0.960  0.250  1.0
  O  O20  1  0.541  0.036  0.750  1.0
  O  O21  1  0.518  0.541  0.250  1.0
  O  O22  1  0.491  0.471  0.750  1.0
  O  O23  1  0.246  0.013  0.992  1.0
  O  O24  1  0.246  0.013  0.508  1.0
  O  O25  1  0.251  0.499  0.016  1.0
  O  O26  1  0.251  0.499  0.484  1.0
  O  O27  1  0.755  0.982  0.045  1.0
  O  O28  1  0.755  0.982  0.455  1.0
  O  O29  1  0.751  0.522  0.978  1.0
  O  O30  1  0.751  0.522  0.522  1.0
  O  O31  1  0.979  0.246  0.967  1.0
  O  O32  1  0.979  0.246  0.533  1.0
  O  O33  1  0.013  0.756  0.064  1.0
  O  O34  1  0.013  0.756  0.436  1.0
  O  O35  1  0.511  0.252  0.029  1.0
  O  O36  1  0.511  0.252  0.471  1.0
  O  O37  1  0.487  0.754  0.954  1.0
  O  O38  1  0.487  0.754  0.546  1.0
[/CIF]
.