data_K2NbRe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.72
_cell_length_b   2.72
_cell_length_c   12.57
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2NbRe
_chemical_formula_sum   'K2 Nb1 Re1'
_cell_volume   93.34
_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  0.36  0.36  0.15  1.0
  K  K1  1  0.36  0.36  0.42  1.0
  Nb  Nb2  1  0.0  0.0  0.0  1.0
  Re  Re3  1  0.0  0.0  0.29  1.0

data_K2NbRe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.85
_cell_length_b   3.85
_cell_length_c   12.57
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2NbRe
_chemical_formula_sum   'K4 Nb2 Re2'
_cell_volume   186.68
_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  0.36  0.0  0.15  1.0
  K  K1  2  0.36  0.0  0.42  1.0
  Nb  Nb2  2  0.0  0.0  0.0  1.0
  Re  Re3  2  0.0  0.0  0.29  1.0

K K Nb Re
K2NbRe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two K2NbRe clusters. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 2-coordinate geometry to one Nb(1) and one Re(1) atom. The K(1)-Nb(1) bond length is 2.37 Å. The K(1)-Re(1) bond length is 2.18 Å. In the second K site, K(2) is bonded in a 1-coordinate geometry to one Re(1) atom. The K(2)-Re(1) bond length is 2.18 Å. Nb(1) is bonded in a 1-coordinate geometry to one K(1) atom. Re(1) is bonded in a 2-coordinate geometry to one K(1) and one K(2) atom.