data_K2BiB
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.65
_cell_length_b   4.65
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2BiB
_chemical_formula_sum   'K2 Bi1 B1'
_cell_volume   114.26
_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  0.32  0.0  0.64  1.0
  K  K3  1  0.0  0.32  0.64  1.0
  Bi  Bi1  1  0.32  0.32  0.0  1.0
  B  B0  1  0.0  0.0  0.0  1.0

data_K2BiB
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.57
_cell_length_b   6.57
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2BiB
_chemical_formula_sum   'K4 Bi2 B2'
_cell_volume   228.51
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  4  0.16  0.16  0.64  1.0
  Bi  Bi1  2  0.32  0.0  0.0  1.0
  B  B2  2  0.0  0.0  0.0  1.0

K K Bi B
K2BBi crystallizes in the monoclinic Cm space group. K(1) is bonded in a 2-coordinate geometry to one B(1) and three equivalent Bi(1) atoms. The K(1)-B(1) bond length is 2.42 Å. There are a spread of K(1)-Bi(1) bond distances ranging from 2.42-3.72 Å. B(1) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Bi(1) atom. The B(1)-Bi(1) bond length is 2.13 Å. Bi(1) is bonded in a 7-coordinate geometry to six equivalent K(1) and one B(1) atom.