data_K2CrBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.33
_cell_length_b   6.33
_cell_length_c   3.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   117.5
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2CrBi
_chemical_formula_sum   'K2 Cr1 Bi1'
_cell_volume   137.24
_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
  K  K2  1  0.64  0.71  0.93  1.0
  K  K3  1  0.64  0.29  0.93  1.0
  Cr  Cr1  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.28  0.0  0.0  1.0

data_K2CrBi
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.86
_cell_length_b   6.33
_cell_length_c   6.33
_cell_angle_alpha   117.5
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2CrBi
_chemical_formula_sum   'K2 Cr1 Bi1'
_cell_volume   137.24
_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
  K  K0  1  0.93  0.64  0.29  1.0
  K  K1  1  0.93  0.64  0.71  1.0
  Cr  Cr2  1  0.0  0.0  0.0  1.0
  Bi  Bi3  1  0.0  0.28  0.0  1.0

K K Cr Bi
K K Cr Bi 0 1 o o o 0 2 + + + 1 3 o o + 2 3 o o o 
K2CrBi crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one K2CrBi cluster. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted single-bond geometry to one Cr(1) atom. The K(1)-Cr(1) bond length is 2.19 Å. In the second K site, K(2) is bonded in a single-bond geometry to one Bi(1) atom. The K(2)-Bi(1) bond length is 2.19 Å. Cr(1) is bonded in a distorted bent 120 degrees geometry to one K(1) and one Bi(1) atom. The Cr(1)-Bi(1) bond length is 1.79 Å. Bi(1) is bonded in a 2-coordinate geometry to one K(2) and one Cr(1) atom.