data_K2BeB
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.92
_cell_length_b   3.92
_cell_length_c   9.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   123.33
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2BeB
_chemical_formula_sum   'K2 Be1 B1'
_cell_volume   127.95
_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  0.86  0.0  0.88  1.0
  K  K3  1  0.0  0.0  0.57  1.0
  Be  Be1  1  0.0  0.0  0.66  1.0
  B  B0  1  0.86  0.0  0.81  1.0

data_K2BeB
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.73
_cell_length_b   3.92
_cell_length_c   9.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   118.34
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2BeB
_chemical_formula_sum   'K2 Be1 B1'
_cell_volume   127.95
_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  0.0  0.0  0.57  1.0
  K  K1  1  0.0  0.86  0.88  1.0
  Be  Be2  1  0.0  0.0  0.66  1.0
  B  B3  1  0.0  0.86  0.81  1.0

K K Be B
K2BeB crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one K2BeB cluster. There are two inequivalent K sites. In the first K site, K(1) is bonded in a single-bond geometry to one B(1) atom. The K(1)-B(1) bond length is 0.70 Å. In the second K site, K(2) is bonded in a single-bond geometry to one Be(1) atom. The K(2)-Be(1) bond length is 0.92 Å. Be(1) is bonded in a distorted bent 150 degrees geometry to one K(2) and one B(1) atom. The Be(1)-B(1) bond length is 1.56 Å. B(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and one Be(1) atom.