data_KVSb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.4
_cell_length_b   3.4
_cell_length_c   8.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KVSb2
_chemical_formula_sum   'K1 V1 Sb2'
_cell_volume   101.13
_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  0.0  1.0
  V  V3  1  0.0  0.0  0.37  1.0
  Sb  Sb1  1  0.7  0.7  0.74  1.0
  Sb  Sb2  1  0.7  0.7  1.0  1.0

data_KVSb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   8.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KVSb2
_chemical_formula_sum   'K2 V2 Sb4'
_cell_volume   202.26
_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  0.0  0.0  0.0  1.0
  V  V1  2  0.0  0.0  0.37  1.0
  Sb  Sb2  2  0.2  0.5  0.74  1.0
  Sb  Sb3  2  0.2  0.5  1.0  1.0

K V Sb Sb
KVSb2 crystallizes in the monoclinic Cm space group. K(1) is bonded in a distorted single-bond geometry to one V(1), one Sb(1), and one Sb(2) atom. The K(1)-V(1) bond length is 3.23 Å. The K(1)-Sb(1) bond length is 2.68 Å. The K(1)-Sb(2) bond length is 1.44 Å. V(1) is bonded in a 7-coordinate geometry to one K(1), four equivalent V(1), one Sb(1), and one Sb(2) atom. All V(1)-V(1) bond lengths are 3.40 Å. The V(1)-Sb(1) bond length is 3.55 Å. The V(1)-Sb(2) bond length is 3.55 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 2-coordinate geometry to one K(1), one V(1), and one Sb(2) atom. The Sb(1)-Sb(2) bond length is 2.25 Å. In the second Sb site, Sb(2) is bonded in a distorted single-bond geometry to one K(1), one V(1), and one Sb(1) atom.