data_V2Cu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   4.76
_cell_angle_alpha   103.71
_cell_angle_beta   103.71
_cell_angle_gamma   121.72
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V2Cu
_chemical_formula_sum   'V4 Cu2'
_cell_volume   79.93
_cell_formula_units_Z   2
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  V2  1  0.86  0.8  0.0  1.0
  V  V3  1  0.07  0.14  0.32  1.0
  V  V4  1  0.86  0.07  0.32  1.0
  V  V5  1  0.07  0.86  0.0  1.0
  Cu  Cu0  1  0.0  0.0  0.16  1.0
  Cu  Cu1  1  0.0  0.0  0.47  1.0

data_V2Cu
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.63
_cell_length_b   4.76
_cell_length_c   4.76
_cell_angle_alpha   76.29
_cell_angle_beta   60.86
_cell_angle_gamma   60.86
_symmetry_Int_Tables_number   1
_chemical_formula_structural   V2Cu
_chemical_formula_sum   'V4 Cu2'
_cell_volume   79.93
_cell_formula_units_Z   2
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  V0  1  0.76  0.32  0.79  1.0
  V  V1  1  0.8  0.0  0.06  1.0
  V  V2  1  0.82  0.32  0.94  1.0
  V  V3  1  0.86  0.0  0.21  1.0
  Cu  Cu4  1  0.53  0.47  0.0  1.0
  Cu  Cu5  1  0.84  0.16  0.0  1.0

V V V V Cu Cu