The crystal structure described by MgCr2Ag6(O4Cl)2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) and two equivalent Cl(1) atoms. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with two equivalent Ag(3)Cl2O4 octahedra and corners with two equivalent Ag(4)Cl2O4 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent Cl(1) atoms. In the second Ag site, Ag(2) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent Cl(1) atoms. In the third Ag site, Ag(3) is bonded to four equivalent O(2) and two equivalent Cl(1) atoms to form distorted AgCl2O4 octahedra that share corners with two equivalent Ag(4)Cl2O4 octahedra and corners with four equivalent Cr(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. In the fourth Ag site, Ag(4) is bonded to four equivalent O(1) and two equivalent Cl(1) atoms to form distorted AgCl2O4 octahedra that share corners with two equivalent Ag(3)Cl2O4 octahedra and corners with four equivalent Cr(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Cr(1), one Ag(1), and one Ag(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Cr(1), one Ag(1), one Ag(2), and one Ag(3) atom. Cl(1) is bonded in a 7-coordinate geometry to one Mg(1), one Ag(3), one Ag(4), two equivalent Ag(1), and two equivalent Ag(2) atoms. is represented by the CIF file [CIF]
data_MgCr2Ag6(ClO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.604
_cell_length_b   7.517
_cell_length_c   7.517
_cell_angle_alpha   89.966
_cell_angle_beta   85.748
_cell_angle_gamma   94.250
_symmetry_Int_Tables_number   1
_cell_volume   314.896
_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
  Mg  Mg0  1  0.000  0.500  1.000  1.0
  Cr  Cr1  1  0.000  0.758  0.258  1.0
  Cr  Cr2  1  1.000  0.242  0.742  1.0
  Ag  Ag3  1  0.118  0.226  0.274  1.0
  Ag  Ag4  1  0.500  0.500  0.500  1.0
  Ag  Ag5  1  0.500  0.000  0.500  1.0
  Ag  Ag6  1  0.882  0.774  0.725  1.0
  Ag  Ag7  1  0.500  0.000  0.000  1.0
  Ag  Ag8  1  0.500  0.500  0.000  1.0
  Cl  Cl9  1  0.344  0.731  0.769  1.0
  Cl  Cl10  1  0.656  0.269  0.231  1.0
  O  O11  1  0.154  0.559  0.232  1.0
  O  O12  1  0.153  0.268  0.941  1.0
  O  O13  1  0.221  0.930  0.250  1.0
  O  O14  1  0.221  0.250  0.570  1.0
  O  O15  1  0.779  0.750  0.430  1.0
  O  O16  1  0.846  0.441  0.768  1.0
  O  O17  1  0.779  0.070  0.750  1.0
  O  O18  1  0.847  0.732  0.059  1.0
[/CIF]
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The crystal structure described by MgCr2Ag6(O4Cl)2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) and two equivalent Cl(1) atoms. Cr(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CrO4 tetrahedra that share corners with two equivalent Ag(3)Cl2O4 octahedra and corners with two equivalent Ag(4)Cl2O4 octahedra. The corner-sharing octahedral tilt angles range from 53-56°. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent Cl(1) atoms. In the second Ag site, Ag(2) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent Cl(1) atoms. In the third Ag site, Ag(3) is bonded to four equivalent O(2) and two equivalent Cl(1) atoms to form distorted AgCl2O4 octahedra that share corners with two equivalent Ag(4)Cl2O4 octahedra and corners with four equivalent Cr(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. In the fourth Ag site, Ag(4) is bonded to four equivalent O(1) and two equivalent Cl(1) atoms to form distorted AgCl2O4 octahedra that share corners with two equivalent Ag(3)Cl2O4 octahedra and corners with four equivalent Cr(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Cr(1), one Ag(1), and one Ag(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Cr(1), one Ag(1), one Ag(2), and one Ag(3) atom. Cl(1) is bonded in a 7-coordinate geometry to one Mg(1), one Ag(3), one Ag(4), two equivalent Ag(1), and two equivalent Ag(2) atoms. is represented by the CIF file [CIF]
data_MgCr2Ag6(ClO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.604
_cell_length_b   7.517
_cell_length_c   7.517
_cell_angle_alpha   89.966
_cell_angle_beta   85.748
_cell_angle_gamma   94.250
_symmetry_Int_Tables_number   1
_cell_volume   314.896
_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
  Mg  Mg0  1  0.000  0.500  1.000  1.0
  Cr  Cr1  1  0.000  0.758  0.258  1.0
  Cr  Cr2  1  1.000  0.242  0.742  1.0
  Ag  Ag3  1  0.118  0.226  0.274  1.0
  Ag  Ag4  1  0.500  0.500  0.500  1.0
  Ag  Ag5  1  0.500  0.000  0.500  1.0
  Ag  Ag6  1  0.882  0.774  0.725  1.0
  Ag  Ag7  1  0.500  0.000  0.000  1.0
  Ag  Ag8  1  0.500  0.500  0.000  1.0
  Cl  Cl9  1  0.344  0.731  0.769  1.0
  Cl  Cl10  1  0.656  0.269  0.231  1.0
  O  O11  1  0.154  0.559  0.232  1.0
  O  O12  1  0.153  0.268  0.941  1.0
  O  O13  1  0.221  0.930  0.250  1.0
  O  O14  1  0.221  0.250  0.570  1.0
  O  O15  1  0.779  0.750  0.430  1.0
  O  O16  1  0.846  0.441  0.768  1.0
  O  O17  1  0.779  0.070  0.750  1.0
  O  O18  1  0.847  0.732  0.059  1.0
[/CIF]
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