The crystal structure described by Sr2MnGaO5 crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form 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 2-7°. 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 28°. 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 distorted OSr4Mn2 octahedra that share corners with two equivalent O(1)Sr4Mn2 octahedra, corners with four equivalent O(3)Sr2Ga2 trigonal pyramids, edges with two equivalent O(1)Sr4Mn2 octahedra, and faces with four equivalent O(2)Sr4Mn2 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 distorted OSr4Mn2 octahedra that share corners with two equivalent O(2)Sr4Mn2 octahedra, corners with four equivalent O(3)Sr2Ga2 trigonal pyramids, edges with two equivalent O(2)Sr4Mn2 octahedra, and faces with four equivalent O(1)Sr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form OSr2Ga2 trigonal pyramids that share corners with four equivalent O(1)Sr4Mn2 octahedra, corners with four equivalent O(2)Sr4Mn2 octahedra, and  an edgeedge with one O(3)Sr2Ga2 trigonal pyramid. The corner-sharing octahedral tilt angles range from 26-69°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Mn(1), and one Ga(1) atom. is represented by the CIF card [CIF]
data_Sr2MnGaO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.503
_cell_length_b   5.558
_cell_length_c   9.093
_cell_angle_alpha   107.641
_cell_angle_beta   107.457
_cell_angle_gamma   90.491
_symmetry_Int_Tables_number   1
_cell_volume   251.332
_cell_formula_units_Z   2
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
  Ga  Ga0  1  0.321  0.316  0.500  1.0
  Ga  Ga1  1  0.679  0.685  0.500  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Mn  Mn3  1  0.000  1.000  1.000  1.0
  O  O4  1  0.743  0.743  0.986  1.0
  O  O5  1  0.257  0.257  0.014  1.0
  O  O6  1  0.752  0.252  0.004  1.0
  O  O7  1  0.248  0.748  0.996  1.0
  O  O8  1  0.676  0.336  0.500  1.0
  O  O9  1  0.324  0.664  0.500  1.0
  O  O10  1  0.336  0.322  0.708  1.0
  O  O11  1  0.664  0.678  0.292  1.0
  O  O12  1  0.871  0.886  0.708  1.0
  O  O13  1  0.129  0.114  0.292  1.0
  Sr  Sr14  1  0.902  0.373  0.777  1.0
  Sr  Sr15  1  0.098  0.627  0.223  1.0
  Sr  Sr16  1  0.375  0.904  0.777  1.0
  Sr  Sr17  1  0.625  0.096  0.223  1.0
[/CIF]
.
The crystal structure described by Sr2MnGaO5 crystallizes in the monoclinic C2/m space group. Sr(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form 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 2-7°. 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 28°. 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 distorted OSr4Mn2 octahedra that share corners with two equivalent O(1)Sr4Mn2 octahedra, corners with four equivalent O(3)Sr2Ga2 trigonal pyramids, edges with two equivalent O(1)Sr4Mn2 octahedra, and faces with four equivalent O(2)Sr4Mn2 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 distorted OSr4Mn2 octahedra that share corners with two equivalent O(2)Sr4Mn2 octahedra, corners with four equivalent O(3)Sr2Ga2 trigonal pyramids, edges with two equivalent O(2)Sr4Mn2 octahedra, and faces with four equivalent O(1)Sr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form OSr2Ga2 trigonal pyramids that share corners with four equivalent O(1)Sr4Mn2 octahedra, corners with four equivalent O(2)Sr4Mn2 octahedra, and  an edgeedge with one O(3)Sr2Ga2 trigonal pyramid. The corner-sharing octahedral tilt angles range from 26-69°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Mn(1), and one Ga(1) atom. is represented by the CIF card [CIF]
data_Sr2MnGaO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.503
_cell_length_b   5.558
_cell_length_c   9.093
_cell_angle_alpha   107.641
_cell_angle_beta   107.457
_cell_angle_gamma   90.491
_symmetry_Int_Tables_number   1
_cell_volume   251.332
_cell_formula_units_Z   2
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
  Ga  Ga0  1  0.321  0.316  0.500  1.0
  Ga  Ga1  1  0.679  0.685  0.500  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Mn  Mn3  1  0.000  1.000  1.000  1.0
  O  O4  1  0.743  0.743  0.986  1.0
  O  O5  1  0.257  0.257  0.014  1.0
  O  O6  1  0.752  0.252  0.004  1.0
  O  O7  1  0.248  0.748  0.996  1.0
  O  O8  1  0.676  0.336  0.500  1.0
  O  O9  1  0.324  0.664  0.500  1.0
  O  O10  1  0.336  0.322  0.708  1.0
  O  O11  1  0.664  0.678  0.292  1.0
  O  O12  1  0.871  0.886  0.708  1.0
  O  O13  1  0.129  0.114  0.292  1.0
  Sr  Sr14  1  0.902  0.373  0.777  1.0
  Sr  Sr15  1  0.098  0.627  0.223  1.0
  Sr  Sr16  1  0.375  0.904  0.777  1.0
  Sr  Sr17  1  0.625  0.096  0.223  1.0
[/CIF]
.