The crystal structure described by (NH4)2CrO4 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of eight ammonium molecules and four cq4 molecules. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrH8(NO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.936
_cell_length_b   6.936
_cell_length_c   7.706
_cell_angle_alpha   67.690
_cell_angle_beta   67.690
_cell_angle_gamma   54.622
_symmetry_Int_Tables_number   1
_cell_volume   273.266
_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  0.173  0.173  0.786  1.0
  Cr  Cr1  1  0.827  0.827  0.214  1.0
  H  H2  1  0.438  0.438  0.735  1.0
  H  H3  1  0.562  0.562  0.265  1.0
  H  H4  1  0.588  0.588  0.607  1.0
  H  H5  1  0.412  0.412  0.393  1.0
  H  H6  1  0.394  0.657  0.820  1.0
  H  H7  1  0.657  0.394  0.820  1.0
  H  H8  1  0.606  0.343  0.180  1.0
  H  H9  1  0.343  0.606  0.180  1.0
  H  H10  1  0.919  0.919  0.751  1.0
  H  H11  1  0.081  0.081  0.249  1.0
  H  H12  1  0.859  0.859  0.591  1.0
  H  H13  1  0.141  0.141  0.409  1.0
  H  H14  1  0.658  0.918  0.804  1.0
  H  H15  1  0.918  0.658  0.804  1.0
  H  H16  1  0.342  0.082  0.196  1.0
  H  H17  1  0.082  0.342  0.196  1.0
  N  N18  1  0.519  0.519  0.746  1.0
  N  N19  1  0.481  0.481  0.254  1.0
  N  N20  1  0.839  0.839  0.737  1.0
  N  N21  1  0.161  0.161  0.263  1.0
  O  O22  1  0.320  0.320  0.641  1.0
  O  O23  1  0.680  0.680  0.359  1.0
  O  O24  1  0.091  0.091  0.660  1.0
  O  O25  1  0.909  0.909  0.340  1.0
  O  O26  1  0.927  0.356  0.922  1.0
  O  O27  1  0.356  0.927  0.922  1.0
  O  O28  1  0.073  0.644  0.078  1.0
  O  O29  1  0.644  0.073  0.078  1.0
[/CIF]
.
The crystal structure described by (NH4)2CrO4 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of eight ammonium molecules and four cq4 molecules. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrH8(NO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.936
_cell_length_b   6.936
_cell_length_c   7.706
_cell_angle_alpha   67.690
_cell_angle_beta   67.690
_cell_angle_gamma   54.622
_symmetry_Int_Tables_number   1
_cell_volume   273.266
_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  0.173  0.173  0.786  1.0
  Cr  Cr1  1  0.827  0.827  0.214  1.0
  H  H2  1  0.438  0.438  0.735  1.0
  H  H3  1  0.562  0.562  0.265  1.0
  H  H4  1  0.588  0.588  0.607  1.0
  H  H5  1  0.412  0.412  0.393  1.0
  H  H6  1  0.394  0.657  0.820  1.0
  H  H7  1  0.657  0.394  0.820  1.0
  H  H8  1  0.606  0.343  0.180  1.0
  H  H9  1  0.343  0.606  0.180  1.0
  H  H10  1  0.919  0.919  0.751  1.0
  H  H11  1  0.081  0.081  0.249  1.0
  H  H12  1  0.859  0.859  0.591  1.0
  H  H13  1  0.141  0.141  0.409  1.0
  H  H14  1  0.658  0.918  0.804  1.0
  H  H15  1  0.918  0.658  0.804  1.0
  H  H16  1  0.342  0.082  0.196  1.0
  H  H17  1  0.082  0.342  0.196  1.0
  N  N18  1  0.519  0.519  0.746  1.0
  N  N19  1  0.481  0.481  0.254  1.0
  N  N20  1  0.839  0.839  0.737  1.0
  N  N21  1  0.161  0.161  0.263  1.0
  O  O22  1  0.320  0.320  0.641  1.0
  O  O23  1  0.680  0.680  0.359  1.0
  O  O24  1  0.091  0.091  0.660  1.0
  O  O25  1  0.909  0.909  0.340  1.0
  O  O26  1  0.927  0.356  0.922  1.0
  O  O27  1  0.356  0.927  0.922  1.0
  O  O28  1  0.073  0.644  0.078  1.0
  O  O29  1  0.644  0.073  0.078  1.0
[/CIF]
.