The material structure described by AgKCr2O7 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 10-coordinate geometry to one O(2), two equivalent O(3), three equivalent O(4), and four equivalent O(1) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), one O(5), and two equivalent O(3) atoms to form corner-sharing CrO4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing CrO4 tetrahedra. Ag(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to two equivalent K(1), one Cr(2), and one Ag(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1) and one Cr(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Cr(1), and one Ag(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to three equivalent K(1) and one Cr(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cr(1) and one Cr(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KCr2AgO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.929
_cell_length_b   7.807
_cell_length_c   15.487
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   716.926
_cell_formula_units_Z   4
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
  K  K0  1  0.750  0.643  0.789  1.0
  K  K1  1  0.750  0.857  0.289  1.0
  K  K2  1  0.250  0.357  0.211  1.0
  K  K3  1  0.250  0.143  0.711  1.0
  Cr  Cr4  1  0.250  0.804  0.943  1.0
  Cr  Cr5  1  0.750  0.176  0.855  1.0
  Cr  Cr6  1  0.750  0.324  0.355  1.0
  Cr  Cr7  1  0.250  0.696  0.443  1.0
  Cr  Cr8  1  0.250  0.824  0.145  1.0
  Cr  Cr9  1  0.750  0.304  0.557  1.0
  Cr  Cr10  1  0.250  0.676  0.645  1.0
  Cr  Cr11  1  0.750  0.196  0.057  1.0
  Ag  Ag12  1  0.250  0.157  0.451  1.0
  Ag  Ag13  1  0.750  0.657  0.049  1.0
  Ag  Ag14  1  0.250  0.343  0.951  1.0
  Ag  Ag15  1  0.750  0.843  0.549  1.0
  O  O16  1  0.022  0.701  0.151  1.0
  O  O17  1  0.750  0.434  0.638  1.0
  O  O18  1  0.521  0.319  0.057  1.0
  O  O19  1  0.478  0.701  0.151  1.0
  O  O20  1  0.250  0.967  0.221  1.0
  O  O21  1  0.978  0.201  0.349  1.0
  O  O22  1  0.979  0.181  0.557  1.0
  O  O23  1  0.479  0.681  0.943  1.0
  O  O24  1  0.250  0.578  0.541  1.0
  O  O25  1  0.250  0.934  0.862  1.0
  O  O26  1  0.522  0.201  0.349  1.0
  O  O27  1  0.478  0.799  0.651  1.0
  O  O28  1  0.750  0.033  0.779  1.0
  O  O29  1  0.978  0.299  0.849  1.0
  O  O30  1  0.522  0.299  0.849  1.0
  O  O31  1  0.479  0.819  0.443  1.0
  O  O32  1  0.250  0.533  0.721  1.0
  O  O33  1  0.750  0.422  0.459  1.0
  O  O34  1  0.750  0.078  0.959  1.0
  O  O35  1  0.021  0.819  0.443  1.0
  O  O36  1  0.750  0.066  0.138  1.0
  O  O37  1  0.750  0.467  0.279  1.0
  O  O38  1  0.250  0.922  0.041  1.0
  O  O39  1  0.022  0.799  0.651  1.0
  O  O40  1  0.979  0.319  0.057  1.0
  O  O41  1  0.021  0.681  0.943  1.0
  O  O42  1  0.521  0.181  0.557  1.0
  O  O43  1  0.250  0.566  0.362  1.0
[/CIF]
.
The material structure described by AgKCr2O7 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 10-coordinate geometry to one O(2), two equivalent O(3), three equivalent O(4), and four equivalent O(1) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), one O(5), and two equivalent O(3) atoms to form corner-sharing CrO4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing CrO4 tetrahedra. Ag(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to two equivalent K(1), one Cr(2), and one Ag(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1) and one Cr(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Cr(1), and one Ag(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to three equivalent K(1) and one Cr(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cr(1) and one Cr(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KCr2AgO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.929
_cell_length_b   7.807
_cell_length_c   15.487
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   716.926
_cell_formula_units_Z   4
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
  K  K0  1  0.750  0.643  0.789  1.0
  K  K1  1  0.750  0.857  0.289  1.0
  K  K2  1  0.250  0.357  0.211  1.0
  K  K3  1  0.250  0.143  0.711  1.0
  Cr  Cr4  1  0.250  0.804  0.943  1.0
  Cr  Cr5  1  0.750  0.176  0.855  1.0
  Cr  Cr6  1  0.750  0.324  0.355  1.0
  Cr  Cr7  1  0.250  0.696  0.443  1.0
  Cr  Cr8  1  0.250  0.824  0.145  1.0
  Cr  Cr9  1  0.750  0.304  0.557  1.0
  Cr  Cr10  1  0.250  0.676  0.645  1.0
  Cr  Cr11  1  0.750  0.196  0.057  1.0
  Ag  Ag12  1  0.250  0.157  0.451  1.0
  Ag  Ag13  1  0.750  0.657  0.049  1.0
  Ag  Ag14  1  0.250  0.343  0.951  1.0
  Ag  Ag15  1  0.750  0.843  0.549  1.0
  O  O16  1  0.022  0.701  0.151  1.0
  O  O17  1  0.750  0.434  0.638  1.0
  O  O18  1  0.521  0.319  0.057  1.0
  O  O19  1  0.478  0.701  0.151  1.0
  O  O20  1  0.250  0.967  0.221  1.0
  O  O21  1  0.978  0.201  0.349  1.0
  O  O22  1  0.979  0.181  0.557  1.0
  O  O23  1  0.479  0.681  0.943  1.0
  O  O24  1  0.250  0.578  0.541  1.0
  O  O25  1  0.250  0.934  0.862  1.0
  O  O26  1  0.522  0.201  0.349  1.0
  O  O27  1  0.478  0.799  0.651  1.0
  O  O28  1  0.750  0.033  0.779  1.0
  O  O29  1  0.978  0.299  0.849  1.0
  O  O30  1  0.522  0.299  0.849  1.0
  O  O31  1  0.479  0.819  0.443  1.0
  O  O32  1  0.250  0.533  0.721  1.0
  O  O33  1  0.750  0.422  0.459  1.0
  O  O34  1  0.750  0.078  0.959  1.0
  O  O35  1  0.021  0.819  0.443  1.0
  O  O36  1  0.750  0.066  0.138  1.0
  O  O37  1  0.750  0.467  0.279  1.0
  O  O38  1  0.250  0.922  0.041  1.0
  O  O39  1  0.022  0.799  0.651  1.0
  O  O40  1  0.979  0.319  0.057  1.0
  O  O41  1  0.021  0.681  0.943  1.0
  O  O42  1  0.521  0.181  0.557  1.0
  O  O43  1  0.250  0.566  0.362  1.0
[/CIF]
.