The crystal structure described by Sr4CaMn2(GaO5)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), and two equivalent O(4) atoms. Ca(1) is bonded in a distorted square co-planar geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with two equivalent Ga(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Ga(1) is bonded to one O(3), one O(4), and two equivalent O(5) atoms to form GaO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 31°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Ca(1), one Mn(1), and one Mn(2) atom to form OSr2CaMn2 trigonal bipyramids that share corners with two equivalent O(5)Sr2Ga2 tetrahedra, corners with three equivalent O(1)Sr2CaMn2 trigonal bipyramids,  a cornercorner with one O(4)Sr3Ga trigonal pyramid, and  an edgeedge with one O(4)Sr3Ga trigonal pyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Ca(1), one Mn(1), and one Ga(1) atom. In the fourth O site, O(4) is bonded to one Sr(1), two equivalent Sr(2), and one Ga(1) atom to form distorted OSr3Ga trigonal pyramids that share corners with three equivalent O(5)Sr2Ga2 tetrahedra,  a cornercorner with one O(1)Sr2CaMn2 trigonal bipyramid,  an edgeedge with one O(5)Sr2Ga2 tetrahedra,  an edgeedge with one O(1)Sr2CaMn2 trigonal bipyramid, and  an edgeedge with one O(4)Sr3Ga trigonal pyramid. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with two equivalent O(1)Sr2CaMn2 trigonal bipyramids, corners with three equivalent O(4)Sr3Ga trigonal pyramids,  an edgeedge with one O(5)Sr2Ga2 tetrahedra, and  an edgeedge with one O(4)Sr3Ga trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4CaMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.108
_cell_length_b   6.048
_cell_length_c   9.998
_cell_angle_alpha   66.274
_cell_angle_beta   73.746
_cell_angle_gamma   98.064
_symmetry_Int_Tables_number   1
_cell_volume   310.851
_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  0.068  0.630  0.796  1.0
  Sr  Sr1  1  0.932  0.370  0.204  1.0
  Sr  Sr2  1  0.757  0.041  0.648  1.0
  Sr  Sr3  1  0.243  0.959  0.352  1.0
  Ca  Ca4  1  0.500  0.000  0.000  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  0.630  0.622  0.552  1.0
  Ga  Ga8  1  0.370  0.378  0.448  1.0
  O  O9  1  0.209  0.158  0.085  1.0
  O  O10  1  0.252  0.758  0.951  1.0
  O  O11  1  0.748  0.242  0.049  1.0
  O  O12  1  0.791  0.842  0.915  1.0
  O  O13  1  0.646  0.525  0.750  1.0
  O  O14  1  0.354  0.475  0.250  1.0
  O  O15  1  0.178  0.053  0.573  1.0
  O  O16  1  0.822  0.947  0.427  1.0
  O  O17  1  0.312  0.586  0.548  1.0
  O  O18  1  0.688  0.414  0.452  1.0
[/CIF]
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The crystal structure described by Sr4CaMn2(GaO5)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), and two equivalent O(4) atoms. Ca(1) is bonded in a distorted square co-planar geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with two equivalent Ga(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Ga(1) is bonded to one O(3), one O(4), and two equivalent O(5) atoms to form GaO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra and  an edgeedge with one Ga(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 31°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Sr(1), one Sr(2), one Ca(1), one Mn(1), and one Mn(2) atom to form OSr2CaMn2 trigonal bipyramids that share corners with two equivalent O(5)Sr2Ga2 tetrahedra, corners with three equivalent O(1)Sr2CaMn2 trigonal bipyramids,  a cornercorner with one O(4)Sr3Ga trigonal pyramid, and  an edgeedge with one O(4)Sr3Ga trigonal pyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Ca(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Ca(1), one Mn(1), and one Ga(1) atom. In the fourth O site, O(4) is bonded to one Sr(1), two equivalent Sr(2), and one Ga(1) atom to form distorted OSr3Ga trigonal pyramids that share corners with three equivalent O(5)Sr2Ga2 tetrahedra,  a cornercorner with one O(1)Sr2CaMn2 trigonal bipyramid,  an edgeedge with one O(5)Sr2Ga2 tetrahedra,  an edgeedge with one O(1)Sr2CaMn2 trigonal bipyramid, and  an edgeedge with one O(4)Sr3Ga trigonal pyramid. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(2), and two equivalent Ga(1) atoms to form distorted OSr2Ga2 tetrahedra that share corners with two equivalent O(1)Sr2CaMn2 trigonal bipyramids, corners with three equivalent O(4)Sr3Ga trigonal pyramids,  an edgeedge with one O(5)Sr2Ga2 tetrahedra, and  an edgeedge with one O(4)Sr3Ga trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4CaMn2(GaO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.108
_cell_length_b   6.048
_cell_length_c   9.998
_cell_angle_alpha   66.274
_cell_angle_beta   73.746
_cell_angle_gamma   98.064
_symmetry_Int_Tables_number   1
_cell_volume   310.851
_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  0.068  0.630  0.796  1.0
  Sr  Sr1  1  0.932  0.370  0.204  1.0
  Sr  Sr2  1  0.757  0.041  0.648  1.0
  Sr  Sr3  1  0.243  0.959  0.352  1.0
  Ca  Ca4  1  0.500  0.000  0.000  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  0.630  0.622  0.552  1.0
  Ga  Ga8  1  0.370  0.378  0.448  1.0
  O  O9  1  0.209  0.158  0.085  1.0
  O  O10  1  0.252  0.758  0.951  1.0
  O  O11  1  0.748  0.242  0.049  1.0
  O  O12  1  0.791  0.842  0.915  1.0
  O  O13  1  0.646  0.525  0.750  1.0
  O  O14  1  0.354  0.475  0.250  1.0
  O  O15  1  0.178  0.053  0.573  1.0
  O  O16  1  0.822  0.947  0.427  1.0
  O  O17  1  0.312  0.586  0.548  1.0
  O  O18  1  0.688  0.414  0.452  1.0
[/CIF]
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