The material described by Cr(GeO3)2 crystallizes in the triclinic P-1 space group. Cr(1) is bonded to one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted CrO6 octahedra that share corners with three equivalent Ge(1)O4 tetrahedra, corners with three equivalent Ge(2)O4 tetrahedra, and edges with two equivalent Cr(1)O6 octahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form GeO4 tetrahedra that share corners with three equivalent Cr(1)O6 octahedra and corners with two equivalent Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-64°. In the second Ge site, Ge(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form GeO4 tetrahedra that share corners with three equivalent Cr(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ge(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one Ge(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one Ge(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Cr(1) and one Ge(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to two equivalent Cr(1) and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.572
_cell_length_b   6.549
_cell_length_c   6.811
_cell_angle_alpha   82.971
_cell_angle_beta   74.572
_cell_angle_gamma   75.214
_symmetry_Int_Tables_number   1
_cell_volume   231.266
_cell_formula_units_Z   2
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
  Cr  Cr0  1  0.740  0.908  0.095  1.0
  Cr  Cr1  1  0.260  0.092  0.905  1.0
  Ge  Ge2  1  0.767  0.376  0.213  1.0
  Ge  Ge3  1  0.734  0.797  0.604  1.0
  Ge  Ge4  1  0.233  0.624  0.787  1.0
  Ge  Ge5  1  0.266  0.203  0.396  1.0
  O  O6  1  0.448  0.395  0.344  1.0
  O  O7  1  0.045  0.656  0.613  1.0
  O  O8  1  0.552  0.605  0.656  1.0
  O  O9  1  0.955  0.344  0.387  1.0
  O  O10  1  0.242  0.066  0.633  1.0
  O  O11  1  0.251  0.369  0.918  1.0
  O  O12  1  0.758  0.934  0.367  1.0
  O  O13  1  0.749  0.631  0.082  1.0
  O  O14  1  0.872  0.176  0.031  1.0
  O  O15  1  0.616  0.962  0.823  1.0
  O  O16  1  0.128  0.824  0.969  1.0
  O  O17  1  0.384  0.038  0.177  1.0
[/CIF]
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The material described by Cr(GeO3)2 crystallizes in the triclinic P-1 space group. Cr(1) is bonded to one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted CrO6 octahedra that share corners with three equivalent Ge(1)O4 tetrahedra, corners with three equivalent Ge(2)O4 tetrahedra, and edges with two equivalent Cr(1)O6 octahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form GeO4 tetrahedra that share corners with three equivalent Cr(1)O6 octahedra and corners with two equivalent Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-64°. In the second Ge site, Ge(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form GeO4 tetrahedra that share corners with three equivalent Cr(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Ge(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one Ge(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one Ge(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Cr(1) and one Ge(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to two equivalent Cr(1) and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.572
_cell_length_b   6.549
_cell_length_c   6.811
_cell_angle_alpha   82.971
_cell_angle_beta   74.572
_cell_angle_gamma   75.214
_symmetry_Int_Tables_number   1
_cell_volume   231.266
_cell_formula_units_Z   2
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
  Cr  Cr0  1  0.740  0.908  0.095  1.0
  Cr  Cr1  1  0.260  0.092  0.905  1.0
  Ge  Ge2  1  0.767  0.376  0.213  1.0
  Ge  Ge3  1  0.734  0.797  0.604  1.0
  Ge  Ge4  1  0.233  0.624  0.787  1.0
  Ge  Ge5  1  0.266  0.203  0.396  1.0
  O  O6  1  0.448  0.395  0.344  1.0
  O  O7  1  0.045  0.656  0.613  1.0
  O  O8  1  0.552  0.605  0.656  1.0
  O  O9  1  0.955  0.344  0.387  1.0
  O  O10  1  0.242  0.066  0.633  1.0
  O  O11  1  0.251  0.369  0.918  1.0
  O  O12  1  0.758  0.934  0.367  1.0
  O  O13  1  0.749  0.631  0.082  1.0
  O  O14  1  0.872  0.176  0.031  1.0
  O  O15  1  0.616  0.962  0.823  1.0
  O  O16  1  0.128  0.824  0.969  1.0
  O  O17  1  0.384  0.038  0.177  1.0
[/CIF]
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