data_K2BeP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.34
_cell_length_b   3.34
_cell_length_c   9.8
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2BeP
_chemical_formula_sum   'K2 Be1 P1'
_cell_volume   109.69
_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  K1  1  0.67  0.67  0.68  1.0
  K  K2  1  0.67  0.67  0.12  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  P  P3  1  0.0  0.0  0.9  1.0

data_K2BeP
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.73
_cell_length_b   4.73
_cell_length_c   9.8
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2BeP
_chemical_formula_sum   'K4 Be2 P2'
_cell_volume   219.39
_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  2  0.17  0.5  0.12  1.0
  K  K1  2  0.17  0.5  0.68  1.0
  Be  Be2  2  0.0  0.0  0.0  1.0
  P  P3  2  0.0  0.0  0.9  1.0

K K Be P
K K Be P 0 3 o + o 0 3 + o o 0 3 + + o 0 0 + o o 0 0 o + o 0 2 + + + 1 2 + + o 2 3 o o - 
K2BeP crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two K2BeP clusters. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted single-bond geometry to one P(1) atom. The K(1)-P(1) bond length is 2.65 Å. In the second K site, K(2) is bonded in a distorted single-bond geometry to one Be(1) atom. The K(2)-Be(1) bond length is 1.95 Å. Be(1) is bonded in a 1-coordinate geometry to one K(2) and one P(1) atom. The Be(1)-P(1) bond length is 0.96 Å. P(1) is bonded in a distorted single-bond geometry to one K(1) and one Be(1) atom.