The material structure described by Rb2CrO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. Cr(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1), three equivalent Rb(2), and one Cr(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), three equivalent Rb(2), and one Cr(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one Cr(1) atom. is represented by the CIF file [CIF]
data_Rb2CrO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.045
_cell_length_b   7.996
_cell_length_c   10.705
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   517.394
_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
  Rb  Rb0  1  0.250  0.014  0.303  1.0
  Rb  Rb1  1  0.750  0.986  0.697  1.0
  Rb  Rb2  1  0.250  0.514  0.197  1.0
  Rb  Rb3  1  0.750  0.486  0.803  1.0
  Rb  Rb4  1  0.250  0.334  0.588  1.0
  Rb  Rb5  1  0.750  0.666  0.412  1.0
  Rb  Rb6  1  0.250  0.834  0.912  1.0
  Rb  Rb7  1  0.750  0.166  0.088  1.0
  Cr  Cr8  1  0.250  0.768  0.579  1.0
  Cr  Cr9  1  0.750  0.232  0.421  1.0
  Cr  Cr10  1  0.250  0.268  0.921  1.0
  Cr  Cr11  1  0.750  0.732  0.079  1.0
  O  O12  1  0.527  0.304  0.350  1.0
  O  O13  1  0.027  0.696  0.650  1.0
  O  O14  1  0.973  0.804  0.150  1.0
  O  O15  1  0.473  0.196  0.850  1.0
  O  O16  1  0.473  0.696  0.650  1.0
  O  O17  1  0.973  0.304  0.350  1.0
  O  O18  1  0.027  0.196  0.850  1.0
  O  O19  1  0.527  0.804  0.150  1.0
  O  O20  1  0.250  0.702  0.433  1.0
  O  O21  1  0.750  0.298  0.567  1.0
  O  O22  1  0.250  0.202  0.067  1.0
  O  O23  1  0.750  0.798  0.933  1.0
  O  O24  1  0.750  0.526  0.084  1.0
  O  O25  1  0.250  0.474  0.916  1.0
  O  O26  1  0.750  0.026  0.416  1.0
  O  O27  1  0.250  0.974  0.584  1.0
[/CIF]
.
The material structure described by Rb2CrO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. Cr(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1), three equivalent Rb(2), and one Cr(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), three equivalent Rb(2), and one Cr(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), three equivalent Rb(1), and one Cr(1) atom. is represented by the CIF file [CIF]
data_Rb2CrO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.045
_cell_length_b   7.996
_cell_length_c   10.705
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   517.394
_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
  Rb  Rb0  1  0.250  0.014  0.303  1.0
  Rb  Rb1  1  0.750  0.986  0.697  1.0
  Rb  Rb2  1  0.250  0.514  0.197  1.0
  Rb  Rb3  1  0.750  0.486  0.803  1.0
  Rb  Rb4  1  0.250  0.334  0.588  1.0
  Rb  Rb5  1  0.750  0.666  0.412  1.0
  Rb  Rb6  1  0.250  0.834  0.912  1.0
  Rb  Rb7  1  0.750  0.166  0.088  1.0
  Cr  Cr8  1  0.250  0.768  0.579  1.0
  Cr  Cr9  1  0.750  0.232  0.421  1.0
  Cr  Cr10  1  0.250  0.268  0.921  1.0
  Cr  Cr11  1  0.750  0.732  0.079  1.0
  O  O12  1  0.527  0.304  0.350  1.0
  O  O13  1  0.027  0.696  0.650  1.0
  O  O14  1  0.973  0.804  0.150  1.0
  O  O15  1  0.473  0.196  0.850  1.0
  O  O16  1  0.473  0.696  0.650  1.0
  O  O17  1  0.973  0.304  0.350  1.0
  O  O18  1  0.027  0.196  0.850  1.0
  O  O19  1  0.527  0.804  0.150  1.0
  O  O20  1  0.250  0.702  0.433  1.0
  O  O21  1  0.750  0.298  0.567  1.0
  O  O22  1  0.250  0.202  0.067  1.0
  O  O23  1  0.750  0.798  0.933  1.0
  O  O24  1  0.750  0.526  0.084  1.0
  O  O25  1  0.250  0.474  0.916  1.0
  O  O26  1  0.750  0.026  0.416  1.0
  O  O27  1  0.250  0.974  0.584  1.0
[/CIF]
.