The crystal structure described by SrCa5Mn4(GaO8)2 crystallizes in the monoclinic Pm space group. Sr(1) is bonded in a 12-coordinate geometry to two equivalent O(10), two equivalent O(3), two equivalent O(4), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(3), one O(4), one O(6), one O(9), and two equivalent O(5) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(9), and two equivalent O(6) atoms. In the third Ca site, Ca(3) is bonded in a 6-coordinate geometry to one O(7), one O(8), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, and  a cornercorner with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 10-20°. In the second Mn site, Mn(2) is bonded to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, and  a cornercorner with one Ga(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 10-25°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), and two equivalent O(5) atoms to form GaO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Ga(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. In the second Ga site, Ga(2) is bonded to one O(1), one O(2), and two equivalent O(6) atoms to form GaO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Ga(1), and one Ga(2) atom to form distorted OCa2Ga2 tetrahedra that share corners with two equivalent O(3)SrCa3Mn2 octahedra, corners with two equivalent O(4)SrCa3Mn2 octahedra, and corners with two equivalent O(2)Ca2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 21-50°. In the second O site, O(2) is bonded to two equivalent Ca(2), one Ga(1), and one Ga(2) atom to form distorted OCa2Ga2 tetrahedra that share corners with two equivalent O(3)SrCa3Mn2 octahedra, corners with two equivalent O(4)SrCa3Mn2 octahedra, and corners with two equivalent O(1)Ca2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 21-50°. In the third O site, O(3) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(2) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(4)SrCa3Mn2 octahedra,  a cornercorner with one O(1)Ca2Ga2 tetrahedra,  a cornercorner with one O(2)Ca2Ga2 tetrahedra,  an edgeedge with one O(3)SrCa3Mn2 octahedra, and faces with two equivalent O(4)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 62-65°. In the fourth O site, O(4) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(2) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(3)SrCa3Mn2 octahedra,  a cornercorner with one O(1)Ca2Ga2 tetrahedra,  a cornercorner with one O(2)Ca2Ga2 tetrahedra,  an edgeedge with one O(4)SrCa3Mn2 octahedra, and faces with two equivalent O(3)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 62-65°. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Ca(2), two equivalent Ca(1), one Mn(1), and one Ga(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Ca(1), two equivalent Ca(2), one Mn(2), and one Ga(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one Ca(3), and two equivalent Mn(1) atoms. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(3), and two equivalent Mn(2) atoms. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Mn(1), and one Mn(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Mn(1), and one Mn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa5Mn4(GaO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.129
_cell_length_b   5.454
_cell_length_c   5.632
_cell_angle_alpha   89.949
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   341.880
_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  0.500  0.493  0.754  1.0
  Ca  Ca1  1  0.809  0.975  0.221  1.0
  Ca  Ca2  1  0.191  0.975  0.221  1.0
  Ca  Ca3  1  0.189  0.473  0.781  1.0
  Ca  Ca4  1  0.811  0.473  0.781  1.0
  Ca  Ca5  1  0.500  0.002  0.237  1.0
  Mn  Mn6  1  0.672  0.489  0.257  1.0
  Mn  Mn7  1  0.328  0.489  0.257  1.0
  Mn  Mn8  1  0.328  0.988  0.743  1.0
  Mn  Mn9  1  0.672  0.988  0.743  1.0
  Ga  Ga10  1  0.000  0.428  0.325  1.0
  Ga  Ga11  1  0.000  0.928  0.674  1.0
  O  O12  1  0.000  0.079  0.370  1.0
  O  O13  1  0.000  0.578  0.630  1.0
  O  O14  1  0.656  0.238  0.001  1.0
  O  O15  1  0.344  0.238  0.001  1.0
  O  O16  1  0.347  0.747  0.008  1.0
  O  O17  1  0.653  0.747  0.008  1.0
  O  O18  1  0.857  0.510  0.179  1.0
  O  O19  1  0.143  0.510  0.179  1.0
  O  O20  1  0.143  0.008  0.821  1.0
  O  O21  1  0.857  0.008  0.821  1.0
  O  O22  1  0.500  0.478  0.311  1.0
  O  O23  1  0.500  0.990  0.668  1.0
  O  O24  1  0.702  0.234  0.495  1.0
  O  O25  1  0.298  0.234  0.495  1.0
  O  O26  1  0.299  0.731  0.510  1.0
  O  O27  1  0.701  0.731  0.510  1.0
[/CIF]
.
The crystal structure described by SrCa5Mn4(GaO8)2 crystallizes in the monoclinic Pm space group. Sr(1) is bonded in a 12-coordinate geometry to two equivalent O(10), two equivalent O(3), two equivalent O(4), two equivalent O(7), two equivalent O(8), and two equivalent O(9) atoms. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(3), one O(4), one O(6), one O(9), and two equivalent O(5) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(9), and two equivalent O(6) atoms. In the third Ca site, Ca(3) is bonded in a 6-coordinate geometry to one O(7), one O(8), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, and  a cornercorner with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 10-20°. In the second Mn site, Mn(2) is bonded to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, and  a cornercorner with one Ga(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 10-25°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), and two equivalent O(5) atoms to form GaO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Ga(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. In the second Ga site, Ga(2) is bonded to one O(1), one O(2), and two equivalent O(6) atoms to form GaO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ca(1), one Ga(1), and one Ga(2) atom to form distorted OCa2Ga2 tetrahedra that share corners with two equivalent O(3)SrCa3Mn2 octahedra, corners with two equivalent O(4)SrCa3Mn2 octahedra, and corners with two equivalent O(2)Ca2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 21-50°. In the second O site, O(2) is bonded to two equivalent Ca(2), one Ga(1), and one Ga(2) atom to form distorted OCa2Ga2 tetrahedra that share corners with two equivalent O(3)SrCa3Mn2 octahedra, corners with two equivalent O(4)SrCa3Mn2 octahedra, and corners with two equivalent O(1)Ca2Ga2 tetrahedra. The corner-sharing octahedral tilt angles range from 21-50°. In the third O site, O(3) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(2) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(4)SrCa3Mn2 octahedra,  a cornercorner with one O(1)Ca2Ga2 tetrahedra,  a cornercorner with one O(2)Ca2Ga2 tetrahedra,  an edgeedge with one O(3)SrCa3Mn2 octahedra, and faces with two equivalent O(4)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 62-65°. In the fourth O site, O(4) is bonded to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(2) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(3)SrCa3Mn2 octahedra,  a cornercorner with one O(1)Ca2Ga2 tetrahedra,  a cornercorner with one O(2)Ca2Ga2 tetrahedra,  an edgeedge with one O(4)SrCa3Mn2 octahedra, and faces with two equivalent O(3)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles range from 62-65°. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Ca(2), two equivalent Ca(1), one Mn(1), and one Ga(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Ca(1), two equivalent Ca(2), one Mn(2), and one Ga(2) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one Ca(3), and two equivalent Mn(1) atoms. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(3), and two equivalent Mn(2) atoms. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Mn(1), and one Mn(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Mn(1), and one Mn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa5Mn4(GaO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.129
_cell_length_b   5.454
_cell_length_c   5.632
_cell_angle_alpha   89.949
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   341.880
_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  0.500  0.493  0.754  1.0
  Ca  Ca1  1  0.809  0.975  0.221  1.0
  Ca  Ca2  1  0.191  0.975  0.221  1.0
  Ca  Ca3  1  0.189  0.473  0.781  1.0
  Ca  Ca4  1  0.811  0.473  0.781  1.0
  Ca  Ca5  1  0.500  0.002  0.237  1.0
  Mn  Mn6  1  0.672  0.489  0.257  1.0
  Mn  Mn7  1  0.328  0.489  0.257  1.0
  Mn  Mn8  1  0.328  0.988  0.743  1.0
  Mn  Mn9  1  0.672  0.988  0.743  1.0
  Ga  Ga10  1  0.000  0.428  0.325  1.0
  Ga  Ga11  1  0.000  0.928  0.674  1.0
  O  O12  1  0.000  0.079  0.370  1.0
  O  O13  1  0.000  0.578  0.630  1.0
  O  O14  1  0.656  0.238  0.001  1.0
  O  O15  1  0.344  0.238  0.001  1.0
  O  O16  1  0.347  0.747  0.008  1.0
  O  O17  1  0.653  0.747  0.008  1.0
  O  O18  1  0.857  0.510  0.179  1.0
  O  O19  1  0.143  0.510  0.179  1.0
  O  O20  1  0.143  0.008  0.821  1.0
  O  O21  1  0.857  0.008  0.821  1.0
  O  O22  1  0.500  0.478  0.311  1.0
  O  O23  1  0.500  0.990  0.668  1.0
  O  O24  1  0.702  0.234  0.495  1.0
  O  O25  1  0.298  0.234  0.495  1.0
  O  O26  1  0.299  0.731  0.510  1.0
  O  O27  1  0.701  0.731  0.510  1.0
[/CIF]
.