The structure described by Sr4Mn3(O4Cl)2 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to four equivalent O(1) and five equivalent Cl(1) atoms. In the second Sr site, Sr(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with eight equivalent Sr(2)O12 cuboctahedra, faces with five equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Mn(1)O6 octahedra, and faces with four equivalent Mn(2)ClO5 square pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)ClO5 square pyramids, and faces with eight equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Mn site, Mn(2) is bonded to one O(3), four equivalent O(1), and one Cl(1) atom to form distorted MnClO5 square pyramids that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(2)ClO5 square pyramids, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(2) atoms. In the second O site, O(2) is bonded to four equivalent Sr(2) 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 third O site, O(3) is bonded in a distorted linear geometry to four equivalent Sr(2), one Mn(1), and one Mn(2) atom. Cl(1) is bonded in a 6-coordinate geometry to five equivalent Sr(1) and one Mn(2) atom. is represented by the CIF file [CIF]
data_Sr4Mn3(ClO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.868
_cell_length_b   3.868
_cell_length_c   16.331
_cell_angle_alpha   96.801
_cell_angle_beta   96.801
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   240.847
_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  0.678  0.678  0.356  1.0
  Sr  Sr1  1  0.322  0.322  0.644  1.0
  Sr  Sr2  1  0.558  0.558  0.116  1.0
  Sr  Sr3  1  0.442  0.442  0.884  1.0
  Mn  Mn4  1  0.000  0.000  0.000  1.0
  Mn  Mn5  1  0.881  0.881  0.762  1.0
  Mn  Mn6  1  0.119  0.119  0.238  1.0
  Cl  Cl7  1  0.215  0.215  0.430  1.0
  Cl  Cl8  1  0.785  0.785  0.570  1.0
  O  O9  1  0.128  0.628  0.256  1.0
  O  O10  1  0.372  0.872  0.744  1.0
  O  O11  1  1.000  0.500  0.000  1.0
  O  O12  1  0.500  0.000  0.000  1.0
  O  O13  1  0.628  0.128  0.256  1.0
  O  O14  1  0.060  0.060  0.121  1.0
  O  O15  1  0.872  0.372  0.744  1.0
  O  O16  1  0.940  0.940  0.879  1.0
[/CIF]
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The structure described by Sr4Mn3(O4Cl)2 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to four equivalent O(1) and five equivalent Cl(1) atoms. In the second Sr site, Sr(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with eight equivalent Sr(2)O12 cuboctahedra, faces with five equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Mn(1)O6 octahedra, and faces with four equivalent Mn(2)ClO5 square pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)ClO5 square pyramids, and faces with eight equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the second Mn site, Mn(2) is bonded to one O(3), four equivalent O(1), and one Cl(1) atom to form distorted MnClO5 square pyramids that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(2)ClO5 square pyramids, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(2) atoms. In the second O site, O(2) is bonded to four equivalent Sr(2) 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 third O site, O(3) is bonded in a distorted linear geometry to four equivalent Sr(2), one Mn(1), and one Mn(2) atom. Cl(1) is bonded in a 6-coordinate geometry to five equivalent Sr(1) and one Mn(2) atom. is represented by the CIF file [CIF]
data_Sr4Mn3(ClO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.868
_cell_length_b   3.868
_cell_length_c   16.331
_cell_angle_alpha   96.801
_cell_angle_beta   96.801
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   240.847
_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  0.678  0.678  0.356  1.0
  Sr  Sr1  1  0.322  0.322  0.644  1.0
  Sr  Sr2  1  0.558  0.558  0.116  1.0
  Sr  Sr3  1  0.442  0.442  0.884  1.0
  Mn  Mn4  1  0.000  0.000  0.000  1.0
  Mn  Mn5  1  0.881  0.881  0.762  1.0
  Mn  Mn6  1  0.119  0.119  0.238  1.0
  Cl  Cl7  1  0.215  0.215  0.430  1.0
  Cl  Cl8  1  0.785  0.785  0.570  1.0
  O  O9  1  0.128  0.628  0.256  1.0
  O  O10  1  0.372  0.872  0.744  1.0
  O  O11  1  1.000  0.500  0.000  1.0
  O  O12  1  0.500  0.000  0.000  1.0
  O  O13  1  0.628  0.128  0.256  1.0
  O  O14  1  0.060  0.060  0.121  1.0
  O  O15  1  0.872  0.372  0.744  1.0
  O  O16  1  0.940  0.940  0.879  1.0
[/CIF]
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