data_NdC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.77
_cell_length_b   3.77
_cell_length_c   3.77
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NdC
_chemical_formula_sum   'Nd1 C1'
_cell_volume   37.86
_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
  Nd  Nd1  1  0.67  0.67  0.67  1.0
  C  C0  1  0.0  0.0  0.0  1.0

data_NdC
_symmetry_space_group_name_H-M   R3m
_cell_length_a   3.77
_cell_length_b   3.77
_cell_length_c   9.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   NdC
_chemical_formula_sum   'Nd3 C3'
_cell_volume   113.57
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Nd  Nd0  3  0.0  0.0  0.33  1.0
  C  C1  3  0.0  0.0  0.0  1.0

Nd C
Nd C 0 1 o + + 0 1 + o + 0 1 + + o 
CNd is Zincblende, Sphalerite structured and crystallizes in the trigonal R3m space group. Nd(1) is bonded in a distorted trigonal planar geometry to four equivalent C(1) atoms. There are three shorter (2.18 Å) and one longer (3.09 Å) Nd(1)-C(1) bond length. C(1) is bonded in a distorted trigonal planar geometry to four equivalent Nd(1) atoms.