The compound described by Sr4MgMn2(GaO5)2 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(3), one O(4), one O(7), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and three equivalent O(6) atoms. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(5) and two equivalent O(7) atoms. Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form MnO5 square pyramids that share corners with four equivalent Mn(1)O5 square pyramids and  a cornercorner with one Ga(1)O4 trigonal pyramid. Ga(1) is bonded to one O(5), one O(6), and two equivalent O(7) atoms to form distorted GaO4 trigonal pyramids that share  a cornercorner with one Mn(1)O5 square pyramid and  an edgeedge with one Ga(1)O4 trigonal pyramid. There are seven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(4)Sr4Mn2 octahedra, corners with four equivalent O(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(4)Sr4Mn2 octahedra, faces with two equivalent O(2)Sr4Mn2 octahedra, and faces with two equivalent O(3)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 9°. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(3)Sr4Mn2 octahedra, corners with four equivalent O(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(3)Sr4Mn2 octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(4)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), 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(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(2)Sr4Mn2 octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(4)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), 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(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(1)Sr4Mn2 octahedra, faces with two equivalent O(2)Sr4Mn2 octahedra, and faces with two equivalent O(3)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 9°. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one Mg(1), and one Ga(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to three equivalent Sr(2), one Mn(1), and one Ga(1) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Mg(1), and two equivalent Ga(1) atoms to form distorted OSr2MgGa2 trigonal bipyramids that share corners with two equivalent O(1)Sr4Mn2 octahedra, corners with two equivalent O(2)Sr4Mn2 octahedra, corners with two equivalent O(3)Sr4Mn2 octahedra, corners with two equivalent O(4)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr2MgGa2 trigonal bipyramid, and  an edgeedge with one O(7)Sr2MgGa2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 31-71°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4MgMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.781
_cell_length_b   5.769
_cell_length_c   9.382
_cell_angle_alpha   71.914
_cell_angle_beta   71.921
_cell_angle_gamma   89.529
_symmetry_Int_Tables_number   1
_cell_volume   281.363
_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  0.085  0.617  0.817  1.0
  Sr  Sr1  1  0.901  0.375  0.211  1.0
  Sr  Sr2  1  0.597  0.067  0.817  1.0
  Sr  Sr3  1  0.387  0.914  0.211  1.0
  Mg  Mg4  1  0.969  0.469  0.562  1.0
  Mn  Mn5  1  0.489  0.484  0.026  1.0
  Mn  Mn6  1  0.985  0.990  0.025  1.0
  Ga  Ga7  1  0.624  0.730  0.495  1.0
  Ga  Ga8  1  0.382  0.274  0.495  1.0
  O  O9  1  0.250  0.250  1.000  1.0
  O  O10  1  0.246  0.746  0.007  1.0
  O  O11  1  0.753  0.253  0.994  1.0
  O  O12  1  0.742  0.742  0.015  1.0
  O  O13  1  0.725  0.663  0.673  1.0
  O  O14  1  0.362  0.312  0.296  1.0
  O  O15  1  0.102  0.163  0.673  1.0
  O  O16  1  0.841  0.892  0.296  1.0
  O  O17  1  0.302  0.644  0.500  1.0
  O  O18  1  0.698  0.355  0.500  1.0
[/CIF]
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The compound described by Sr4MgMn2(GaO5)2 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(3), one O(4), one O(7), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and three equivalent O(6) atoms. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(5) and two equivalent O(7) atoms. Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form MnO5 square pyramids that share corners with four equivalent Mn(1)O5 square pyramids and  a cornercorner with one Ga(1)O4 trigonal pyramid. Ga(1) is bonded to one O(5), one O(6), and two equivalent O(7) atoms to form distorted GaO4 trigonal pyramids that share  a cornercorner with one Mn(1)O5 square pyramid and  an edgeedge with one Ga(1)O4 trigonal pyramid. There are seven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(4)Sr4Mn2 octahedra, corners with four equivalent O(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(4)Sr4Mn2 octahedra, faces with two equivalent O(2)Sr4Mn2 octahedra, and faces with two equivalent O(3)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 9°. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(1) atoms to form distorted OSr4Mn2 octahedra that share corners with two equivalent O(3)Sr4Mn2 octahedra, corners with four equivalent O(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(3)Sr4Mn2 octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(4)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), 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(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(2)Sr4Mn2 octahedra, faces with two equivalent O(1)Sr4Mn2 octahedra, and faces with two equivalent O(4)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Sr(2), 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(7)Sr2MgGa2 trigonal bipyramids, edges with two equivalent O(1)Sr4Mn2 octahedra, faces with two equivalent O(2)Sr4Mn2 octahedra, and faces with two equivalent O(3)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 9°. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one Mg(1), and one Ga(1) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to three equivalent Sr(2), one Mn(1), and one Ga(1) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Mg(1), and two equivalent Ga(1) atoms to form distorted OSr2MgGa2 trigonal bipyramids that share corners with two equivalent O(1)Sr4Mn2 octahedra, corners with two equivalent O(2)Sr4Mn2 octahedra, corners with two equivalent O(3)Sr4Mn2 octahedra, corners with two equivalent O(4)Sr4Mn2 octahedra,  a cornercorner with one O(7)Sr2MgGa2 trigonal bipyramid, and  an edgeedge with one O(7)Sr2MgGa2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 31-71°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4MgMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.781
_cell_length_b   5.769
_cell_length_c   9.382
_cell_angle_alpha   71.914
_cell_angle_beta   71.921
_cell_angle_gamma   89.529
_symmetry_Int_Tables_number   1
_cell_volume   281.363
_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  0.085  0.617  0.817  1.0
  Sr  Sr1  1  0.901  0.375  0.211  1.0
  Sr  Sr2  1  0.597  0.067  0.817  1.0
  Sr  Sr3  1  0.387  0.914  0.211  1.0
  Mg  Mg4  1  0.969  0.469  0.562  1.0
  Mn  Mn5  1  0.489  0.484  0.026  1.0
  Mn  Mn6  1  0.985  0.990  0.025  1.0
  Ga  Ga7  1  0.624  0.730  0.495  1.0
  Ga  Ga8  1  0.382  0.274  0.495  1.0
  O  O9  1  0.250  0.250  1.000  1.0
  O  O10  1  0.246  0.746  0.007  1.0
  O  O11  1  0.753  0.253  0.994  1.0
  O  O12  1  0.742  0.742  0.015  1.0
  O  O13  1  0.725  0.663  0.673  1.0
  O  O14  1  0.362  0.312  0.296  1.0
  O  O15  1  0.102  0.163  0.673  1.0
  O  O16  1  0.841  0.892  0.296  1.0
  O  O17  1  0.302  0.644  0.500  1.0
  O  O18  1  0.698  0.355  0.500  1.0
[/CIF]
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