data_SbC5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.17
_cell_length_b   3.17
_cell_length_c   6.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SbC5
_chemical_formula_sum   'Sb1 C5'
_cell_volume   61.94
_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
  Sb  Sb5  1  0.58  0.58  0.09  1.0
  C  C0  1  0.0  0.0  0.03  1.0
  C  C1  1  0.0  0.0  0.14  1.0
  C  C2  1  0.58  0.58  0.65  1.0
  C  C3  1  0.58  0.58  0.53  1.0
  C  C4  1  0.0  0.0  0.0  1.0

data_SbC5
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.48
_cell_length_b   4.48
_cell_length_c   6.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SbC5
_chemical_formula_sum   'Sb2 C10'
_cell_volume   123.89
_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
  Sb  Sb0  2  0.08  0.5  0.09  1.0
  C  C1  2  0.0  0.0  0.0  1.0
  C  C2  2  0.0  0.0  0.03  1.0
  C  C3  2  0.0  0.0  0.14  1.0
  C  C4  2  0.08  0.5  0.53  1.0
  C  C5  2  0.08  0.5  0.65  1.0

Sb C C C C C
Sb C C C C C 0 5 o + o 0 5 + o o 0 5 + + o 0 1 o + o 0 1 + o o 0 1 + + o 0 2 o + o 0 2 + o o 0 2 + + o 1 5 o o o 1 2 o o o 3 4 o o o 
C5Sb crystallizes in the monoclinic Cm space group. There are five inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one C(2), one C(5), and four equivalent Sb(1) atoms. The C(1)-C(2) bond length is 0.64 Å. The C(1)-C(5) bond length is 0.21 Å. There are a spread of C(1)-Sb(1) bond distances ranging from 1.89-2.64 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and four equivalent Sb(1) atoms. There are a spread of C(2)-Sb(1) bond distances ranging from 1.89-2.64 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one Sb(1) atom. The C(3)-C(4) bond length is 0.75 Å. The C(3)-Sb(1) bond length is 2.71 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one Sb(1) atom. The C(4)-Sb(1) bond length is 2.71 Å. In the fifth C site, C(5) is bonded in a single-bond geometry to one C(1) and four equivalent Sb(1) atoms. There are a spread of C(5)-Sb(1) bond distances ranging from 1.94-2.67 Å. Sb(1) is bonded in a 14-coordinate geometry to one C(3), one C(4), four equivalent C(1), four equivalent C(2), and four equivalent C(5) atoms.