The structure described by Sr4MgMn2Ga2O11 crystallizes in the monoclinic C2 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), one O(5), two equivalent O(3), and two equivalent O(7) atoms. Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(7) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 0-17°. In the second Mn site, Mn(2) is bonded to one O(4), one O(5), two equivalent O(2), and two equivalent O(3) 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 0-17°. Ga(1) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, and  a cornercorner with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Mn(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Mn(2), and one Ga(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom to form OSr4Mn2 octahedra that share corners with two equivalent O(5)Sr4Mn2 octahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and edges with two equivalent O(5)Sr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom to form OSr4Mn2 octahedra that share corners with two equivalent O(4)Sr4Mn2 octahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and edges with two equivalent O(4)Sr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form corner-sharing OSr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles are 57°. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Sr(2), one Mg(1), and one Ga(1) atom. is represented by the CIF card [CIF]
data_Sr4MgMn2Ga2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.875
_cell_length_b   5.875
_cell_length_c   8.925
_cell_angle_alpha   69.882
_cell_angle_beta   69.818
_cell_angle_gamma   87.326
_symmetry_Int_Tables_number   1
_cell_volume   270.544
_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  0.141  0.642  0.729  1.0
  Sr  Sr1  1  0.641  0.141  0.699  1.0
  Sr  Sr2  1  0.340  0.840  0.301  1.0
  Sr  Sr3  1  0.870  0.370  0.271  1.0
  Mg  Mg4  1  0.313  0.813  1.000  1.0
  Mn  Mn5  1  0.248  0.248  0.500  1.0
  Mn  Mn6  1  0.747  0.747  0.500  1.0
  Ga  Ga7  1  0.529  0.413  0.999  1.0
  Ga  Ga8  1  0.912  0.028  0.001  1.0
  O  O9  1  0.163  0.013  0.807  1.0
  O  O10  1  0.517  0.663  0.804  1.0
  O  O11  1  0.320  0.470  0.193  1.0
  O  O12  1  0.967  0.821  0.196  1.0
  O  O13  1  0.521  0.022  0.461  1.0
  O  O14  1  0.983  0.482  0.539  1.0
  O  O15  1  0.001  0.001  0.500  1.0
  O  O16  1  0.495  0.495  0.500  1.0
  O  O17  1  0.845  0.345  0.000  1.0
  O  O18  1  0.654  0.865  1.000  1.0
  O  O19  1  0.365  0.154  0.000  1.0
[/CIF]
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The structure described by Sr4MgMn2Ga2O11 crystallizes in the monoclinic C2 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), one O(5), two equivalent O(3), and two equivalent O(7) atoms. Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(7) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra and corners with two equivalent Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 0-17°. In the second Mn site, Mn(2) is bonded to one O(4), one O(5), two equivalent O(2), and two equivalent O(3) 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 0-17°. Ga(1) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form GaO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, and  a cornercorner with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Mn(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Mg(1), one Mn(2), and one Ga(1) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom to form OSr4Mn2 octahedra that share corners with two equivalent O(5)Sr4Mn2 octahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and edges with two equivalent O(5)Sr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom to form OSr4Mn2 octahedra that share corners with two equivalent O(4)Sr4Mn2 octahedra, corners with two equivalent O(6)Sr2Ga2 tetrahedra, and edges with two equivalent O(4)Sr4Mn2 octahedra. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to two equivalent Sr(1) and two equivalent Ga(1) atoms to form corner-sharing OSr2Ga2 tetrahedra. The corner-sharing octahedral tilt angles are 57°. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Sr(2), one Mg(1), and one Ga(1) atom. is represented by the CIF card [CIF]
data_Sr4MgMn2Ga2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.875
_cell_length_b   5.875
_cell_length_c   8.925
_cell_angle_alpha   69.882
_cell_angle_beta   69.818
_cell_angle_gamma   87.326
_symmetry_Int_Tables_number   1
_cell_volume   270.544
_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  0.141  0.642  0.729  1.0
  Sr  Sr1  1  0.641  0.141  0.699  1.0
  Sr  Sr2  1  0.340  0.840  0.301  1.0
  Sr  Sr3  1  0.870  0.370  0.271  1.0
  Mg  Mg4  1  0.313  0.813  1.000  1.0
  Mn  Mn5  1  0.248  0.248  0.500  1.0
  Mn  Mn6  1  0.747  0.747  0.500  1.0
  Ga  Ga7  1  0.529  0.413  0.999  1.0
  Ga  Ga8  1  0.912  0.028  0.001  1.0
  O  O9  1  0.163  0.013  0.807  1.0
  O  O10  1  0.517  0.663  0.804  1.0
  O  O11  1  0.320  0.470  0.193  1.0
  O  O12  1  0.967  0.821  0.196  1.0
  O  O13  1  0.521  0.022  0.461  1.0
  O  O14  1  0.983  0.482  0.539  1.0
  O  O15  1  0.001  0.001  0.500  1.0
  O  O16  1  0.495  0.495  0.500  1.0
  O  O17  1  0.845  0.345  0.000  1.0
  O  O18  1  0.654  0.865  1.000  1.0
  O  O19  1  0.365  0.154  0.000  1.0
[/CIF]
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