The structure described by Sr4MgMn2(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. Mg(1) is bonded in a square co-planar geometry to four equivalent O(3) atoms. 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 four equivalent Mn(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 0-16°. Ga(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted GaO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. 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 edge, face, 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 edge, face, 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 Mg(1), one Mn(1), and one Ga(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(1) and two equivalent Ga(1) atoms. is represented by the CIF card [CIF]
data_Sr4MgMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.847
_cell_length_b   5.852
_cell_length_c   9.189
_cell_angle_alpha   71.718
_cell_angle_beta   71.737
_cell_angle_gamma   90.846
_symmetry_Int_Tables_number   1
_cell_volume   281.240
_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  0.086  0.610  0.804  1.0
  Sr  Sr1  1  0.914  0.390  0.196  1.0
  Sr  Sr2  1  0.610  0.086  0.804  1.0
  Sr  Sr3  1  0.390  0.914  0.196  1.0
  Mg  Mg4  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  0.669  0.670  0.500  1.0
  Ga  Ga8  1  0.331  0.330  0.500  1.0
  O  O9  1  0.267  0.267  0.965  1.0
  O  O10  1  0.250  0.750  0.001  1.0
  O  O11  1  0.750  0.250  0.999  1.0
  O  O12  1  0.733  0.733  0.035  1.0
  O  O13  1  0.731  0.733  0.672  1.0
  O  O14  1  0.269  0.267  0.328  1.0
  O  O15  1  0.097  0.095  0.672  1.0
  O  O16  1  0.903  0.905  0.328  1.0
  O  O17  1  0.336  0.662  0.500  1.0
  O  O18  1  0.664  0.338  0.500  1.0
[/CIF]
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The structure described by Sr4MgMn2(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. Mg(1) is bonded in a square co-planar geometry to four equivalent O(3) atoms. 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 four equivalent Mn(1)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 0-16°. Ga(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted GaO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. 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 edge, face, 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 edge, face, 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 Mg(1), one Mn(1), and one Ga(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Sr(1) and two equivalent Ga(1) atoms. is represented by the CIF card [CIF]
data_Sr4MgMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.847
_cell_length_b   5.852
_cell_length_c   9.189
_cell_angle_alpha   71.718
_cell_angle_beta   71.737
_cell_angle_gamma   90.846
_symmetry_Int_Tables_number   1
_cell_volume   281.240
_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  0.086  0.610  0.804  1.0
  Sr  Sr1  1  0.914  0.390  0.196  1.0
  Sr  Sr2  1  0.610  0.086  0.804  1.0
  Sr  Sr3  1  0.390  0.914  0.196  1.0
  Mg  Mg4  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  0.669  0.670  0.500  1.0
  Ga  Ga8  1  0.331  0.330  0.500  1.0
  O  O9  1  0.267  0.267  0.965  1.0
  O  O10  1  0.250  0.750  0.001  1.0
  O  O11  1  0.750  0.250  0.999  1.0
  O  O12  1  0.733  0.733  0.035  1.0
  O  O13  1  0.731  0.733  0.672  1.0
  O  O14  1  0.269  0.267  0.328  1.0
  O  O15  1  0.097  0.095  0.672  1.0
  O  O16  1  0.903  0.905  0.328  1.0
  O  O17  1  0.336  0.662  0.500  1.0
  O  O18  1  0.664  0.338  0.500  1.0
[/CIF]
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