data_VCu4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.73
_cell_length_b   9.73
_cell_length_c   9.73
_cell_angle_alpha   165.09
_cell_angle_beta   165.09
_cell_angle_gamma   21.15
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VCu4
_chemical_formula_sum   'V1 Cu4'
_cell_volume   60.93
_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
  V  V4  1  0.0  0.0  0.0  1.0
  Cu  Cu0  1  0.0  0.0  0.55  1.0
  Cu  Cu1  1  0.0  0.0  0.86  1.0
  Cu  Cu2  1  0.0  0.0  0.26  1.0
  Cu  Cu3  1  0.0  0.0  0.57  1.0

data_VCu4
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.57
_cell_length_b   3.57
_cell_length_c   9.73
_cell_angle_alpha   90.0
_cell_angle_beta   100.57
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   VCu4
_chemical_formula_sum   'V2 Cu8'
_cell_volume   121.85
_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
  V  V0  2  0.0  0.0  0.0  1.0
  Cu  Cu1  2  0.05  0.5  0.55  1.0
  Cu  Cu2  2  0.07  0.5  0.57  1.0
  Cu  Cu3  2  0.26  0.0  0.26  1.0
  Cu  Cu4  2  0.36  0.5  0.86  1.0

V Cu Cu Cu Cu