data_Rh4C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.02
_cell_length_b   5.02
_cell_length_c   5.02
_cell_angle_alpha   94.13
_cell_angle_beta   94.13
_cell_angle_gamma   148.85
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Rh4C
_chemical_formula_sum   'Rh4 C1'
_cell_volume   62.95
_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
  Rh  Rh1  1  0.97  0.64  0.0  1.0
  Rh  Rh2  1  0.64  0.87  0.0  1.0
  Rh  Rh3  1  0.45  0.78  0.35  1.0
  Rh  Rh4  1  0.78  0.55  0.35  1.0
  C  C0  1  0.0  0.0  0.0  1.0

data_Rh4C
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.69
_cell_length_b   5.02
_cell_length_c   5.02
_cell_angle_alpha   85.87
_cell_angle_beta   74.42
_cell_angle_gamma   74.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Rh4C
_chemical_formula_sum   'Rh4 C1'
_cell_volume   62.95
_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
  Rh  Rh0  1  0.55  0.23  0.65  1.0
  Rh  Rh1  1  0.64  0.33  0.0  1.0
  Rh  Rh2  1  0.78  0.67  0.65  1.0
  Rh  Rh3  1  0.87  0.77  0.0  1.0
  C  C4  1  0.0  0.0  0.0  1.0

Rh Rh Rh Rh C
Rh4C crystallizes in the triclinic P1 space group. There are four inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a distorted single-bond geometry to three equivalent Rh(4) and one C(1) atom. There are a spread of Rh(1)-Rh(4) bond distances ranging from 1.94-3.23 Å. The Rh(1)-C(1) bond length is 1.69 Å. In the second Rh site, Rh(2) is bonded in a single-bond geometry to one Rh(3) and one C(1) atom. The Rh(2)-Rh(3) bond length is 1.94 Å. The Rh(2)-C(1) bond length is 1.31 Å. In the third Rh site, Rh(3) is bonded in a distorted single-bond geometry to one Rh(2) and three equivalent Rh(4) atoms. There are a spread of Rh(3)-Rh(4) bond distances ranging from 2.43-2.73 Å. In the fourth Rh site, Rh(4) is bonded in a 10-coordinate geometry to two equivalent Rh(4), three equivalent Rh(1), three equivalent Rh(3), and two equivalent C(1) atoms. Both Rh(4)-Rh(4) bond lengths are 2.69 Å. There is one shorter (2.42 Å) and one longer (2.44 Å) Rh(4)-C(1) bond length. C(1) is bonded in a 2-coordinate geometry to one Rh(1), one Rh(2), and two equivalent Rh(4) atoms.