The structure described by Sr4CaMn2(GaO5)2 crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Ca(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form CaO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with four equivalent Ga(1)O4 tetrahedra, and edges with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted MnO6 octahedra that share corners with two equivalent Ca(1)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 1-41°. Ga(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form GaO4 tetrahedra that share corners with two equivalent Ca(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  an edgeedge with one Ca(1)O6 octahedra, and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-46°. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form a mixture of face, edge, and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(1), one Mn(1), and one Ga(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(1), and two equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4CaMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.840
_cell_length_b   5.845
_cell_length_c   9.387
_cell_angle_alpha   71.497
_cell_angle_beta   71.514
_cell_angle_gamma   88.891
_symmetry_Int_Tables_number   1
_cell_volume   287.006
_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  0.094  0.600  0.808  1.0
  Sr  Sr1  1  0.906  0.400  0.192  1.0
  Sr  Sr2  1  0.598  0.092  0.808  1.0
  Sr  Sr3  1  0.402  0.908  0.192  1.0
  Ca  Ca4  1  0.000  0.000  0.500  1.0
  Mn  Mn5  1  0.500  0.500  0.000  1.0
  Mn  Mn6  1  0.000  0.000  0.000  1.0
  Ga  Ga7  1  0.662  0.667  0.500  1.0
  Ga  Ga8  1  0.338  0.333  0.500  1.0
  O  O9  1  0.259  0.258  0.983  1.0
  O  O10  1  0.249  0.749  0.002  1.0
  O  O11  1  0.751  0.251  0.998  1.0
  O  O12  1  0.741  0.742  0.017  1.0
  O  O13  1  0.700  0.707  0.681  1.0
  O  O14  1  0.300  0.293  0.319  1.0
  O  O15  1  0.120  0.112  0.681  1.0
  O  O16  1  0.880  0.888  0.319  1.0
  O  O17  1  0.328  0.667  0.500  1.0
  O  O18  1  0.672  0.333  0.500  1.0
[/CIF]
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The structure described by Sr4CaMn2(GaO5)2 crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Ca(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form CaO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with four equivalent Ga(1)O4 tetrahedra, and edges with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted MnO6 octahedra that share corners with two equivalent Ca(1)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 1-41°. Ga(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form GaO4 tetrahedra that share corners with two equivalent Ca(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  an edgeedge with one Ca(1)O6 octahedra, and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-46°. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded to four equivalent Sr(1) and two equivalent Mn(1) atoms to form a mixture of face, edge, and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(1), one Mn(1), and one Ga(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(1), and two equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4CaMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.840
_cell_length_b   5.845
_cell_length_c   9.387
_cell_angle_alpha   71.497
_cell_angle_beta   71.514
_cell_angle_gamma   88.891
_symmetry_Int_Tables_number   1
_cell_volume   287.006
_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  0.094  0.600  0.808  1.0
  Sr  Sr1  1  0.906  0.400  0.192  1.0
  Sr  Sr2  1  0.598  0.092  0.808  1.0
  Sr  Sr3  1  0.402  0.908  0.192  1.0
  Ca  Ca4  1  0.000  0.000  0.500  1.0
  Mn  Mn5  1  0.500  0.500  0.000  1.0
  Mn  Mn6  1  0.000  0.000  0.000  1.0
  Ga  Ga7  1  0.662  0.667  0.500  1.0
  Ga  Ga8  1  0.338  0.333  0.500  1.0
  O  O9  1  0.259  0.258  0.983  1.0
  O  O10  1  0.249  0.749  0.002  1.0
  O  O11  1  0.751  0.251  0.998  1.0
  O  O12  1  0.741  0.742  0.017  1.0
  O  O13  1  0.700  0.707  0.681  1.0
  O  O14  1  0.300  0.293  0.319  1.0
  O  O15  1  0.120  0.112  0.681  1.0
  O  O16  1  0.880  0.888  0.319  1.0
  O  O17  1  0.328  0.667  0.500  1.0
  O  O18  1  0.672  0.333  0.500  1.0
[/CIF]
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