data_Nb2RhW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.78
_cell_length_b   2.78
_cell_length_c   8.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2RhW
_chemical_formula_sum   'Nb2 Rh1 W1'
_cell_volume   66.6
_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
  Nb  Nb0  1  0.39  0.39  0.65  1.0
  Nb  Nb1  1  0.39  0.39  0.98  1.0
  Rh  Rh2  1  0.0  0.0  0.0  1.0
  W  W3  1  0.0  0.0  0.31  1.0

data_Nb2RhW
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.93
_cell_length_b   3.93
_cell_length_c   8.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Nb2RhW
_chemical_formula_sum   'Nb4 Rh2 W2'
_cell_volume   133.19
_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
  Nb  Nb0  2  0.39  0.0  0.65  1.0
  Nb  Nb1  2  0.39  0.0  0.98  1.0
  Rh  Rh2  2  0.0  0.0  0.0  1.0
  W  W3  2  0.0  0.0  0.31  1.0

Nb Nb Rh W
Nb Nb Rh W 0 3 o o o 0 0 + o o 0 0 o + o 0 1 o o o 1 2 o o + 1 3 o o + 2 3 o o o 3 3 + o o 3 3 o + o 
Nb2WRh crystallizes in the monoclinic Cm space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 8-coordinate geometry to one Nb(2), four equivalent Nb(1), and three equivalent W(1) atoms. The Nb(1)-Nb(2) bond length is 2.84 Å. All Nb(1)-Nb(1) bond lengths are 2.78 Å. There is one shorter (3.27 Å) and two longer (3.52 Å) Nb(1)-W(1) bond lengths. In the second Nb site, Nb(2) is bonded in a 4-coordinate geometry to one Nb(1) and four equivalent Rh(1) atoms. There are a spread of Nb(2)-Rh(1) bond distances ranging from 1.54-2.41 Å. W(1) is bonded in a 8-coordinate geometry to three equivalent Nb(1), four equivalent W(1), and one Rh(1) atom. All W(1)-W(1) bond lengths are 2.78 Å. The W(1)-Rh(1) bond length is 2.71 Å. Rh(1) is bonded in a 3-coordinate geometry to four equivalent Nb(2) and one W(1) atom.