The structure described by Nb4Rh2C crystallizes in the cubic Fd-3m space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to six equivalent Rh(1) atoms. In the second Nb site, Nb(2) is bonded in a 2-coordinate geometry to two equivalent Rh(1) and two equivalent C(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Nb(1) and three equivalent Nb(2) atoms. C(1) is bonded to six equivalent Nb(2) atoms to form corner-sharing CNb6 octahedra. The corner-sharing octahedral tilt angles are 36°. is represented by the CIF file [CIF]
data_Nb4Rh2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.477
_cell_length_b   8.477
_cell_length_c   8.477
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   430.787
_cell_formula_units_Z   4
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  0.125  0.625  0.625  1.0
  Nb  Nb1  1  0.625  0.125  0.625  1.0
  Nb  Nb2  1  0.625  0.625  0.125  1.0
  Nb  Nb3  1  0.625  0.625  0.625  1.0
  Nb  Nb4  1  0.817  0.817  0.183  1.0
  Nb  Nb5  1  0.183  0.183  0.817  1.0
  Nb  Nb6  1  0.817  0.183  0.817  1.0
  Nb  Nb7  1  0.183  0.817  0.183  1.0
  Nb  Nb8  1  0.183  0.817  0.817  1.0
  Nb  Nb9  1  0.817  0.183  0.183  1.0
  Nb  Nb10  1  0.433  0.433  0.067  1.0
  Nb  Nb11  1  0.067  0.067  0.433  1.0
  Nb  Nb12  1  0.433  0.067  0.433  1.0
  Nb  Nb13  1  0.067  0.433  0.067  1.0
  Nb  Nb14  1  0.067  0.433  0.433  1.0
  Nb  Nb15  1  0.433  0.067  0.067  1.0
  Rh  Rh16  1  0.762  0.413  0.413  1.0
  Rh  Rh17  1  0.413  0.762  0.413  1.0
  Rh  Rh18  1  0.413  0.413  0.762  1.0
  Rh  Rh19  1  0.413  0.413  0.413  1.0
  Rh  Rh20  1  0.488  0.837  0.837  1.0
  Rh  Rh21  1  0.837  0.488  0.837  1.0
  Rh  Rh22  1  0.837  0.837  0.488  1.0
  Rh  Rh23  1  0.837  0.837  0.837  1.0
  C  C24  1  0.625  0.125  0.125  1.0
  C  C25  1  0.125  0.625  0.125  1.0
  C  C26  1  0.125  0.125  0.625  1.0
  C  C27  1  0.125  0.125  0.125  1.0
[/CIF]
.
The structure described by Nb4Rh2C crystallizes in the cubic Fd-3m space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to six equivalent Rh(1) atoms. In the second Nb site, Nb(2) is bonded in a 2-coordinate geometry to two equivalent Rh(1) and two equivalent C(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Nb(1) and three equivalent Nb(2) atoms. C(1) is bonded to six equivalent Nb(2) atoms to form corner-sharing CNb6 octahedra. The corner-sharing octahedral tilt angles are 36°. is represented by the CIF file [CIF]
data_Nb4Rh2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.477
_cell_length_b   8.477
_cell_length_c   8.477
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   430.787
_cell_formula_units_Z   4
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  0.125  0.625  0.625  1.0
  Nb  Nb1  1  0.625  0.125  0.625  1.0
  Nb  Nb2  1  0.625  0.625  0.125  1.0
  Nb  Nb3  1  0.625  0.625  0.625  1.0
  Nb  Nb4  1  0.817  0.817  0.183  1.0
  Nb  Nb5  1  0.183  0.183  0.817  1.0
  Nb  Nb6  1  0.817  0.183  0.817  1.0
  Nb  Nb7  1  0.183  0.817  0.183  1.0
  Nb  Nb8  1  0.183  0.817  0.817  1.0
  Nb  Nb9  1  0.817  0.183  0.183  1.0
  Nb  Nb10  1  0.433  0.433  0.067  1.0
  Nb  Nb11  1  0.067  0.067  0.433  1.0
  Nb  Nb12  1  0.433  0.067  0.433  1.0
  Nb  Nb13  1  0.067  0.433  0.067  1.0
  Nb  Nb14  1  0.067  0.433  0.433  1.0
  Nb  Nb15  1  0.433  0.067  0.067  1.0
  Rh  Rh16  1  0.762  0.413  0.413  1.0
  Rh  Rh17  1  0.413  0.762  0.413  1.0
  Rh  Rh18  1  0.413  0.413  0.762  1.0
  Rh  Rh19  1  0.413  0.413  0.413  1.0
  Rh  Rh20  1  0.488  0.837  0.837  1.0
  Rh  Rh21  1  0.837  0.488  0.837  1.0
  Rh  Rh22  1  0.837  0.837  0.488  1.0
  Rh  Rh23  1  0.837  0.837  0.837  1.0
  C  C24  1  0.625  0.125  0.125  1.0
  C  C25  1  0.125  0.625  0.125  1.0
  C  C26  1  0.125  0.125  0.625  1.0
  C  C27  1  0.125  0.125  0.125  1.0
[/CIF]
.