data_VCu2Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.96
_cell_length_b   4.96
_cell_length_c   4.96
_cell_angle_alpha   147.72
_cell_angle_beta   128.08
_cell_angle_gamma   62.46
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VCu2Si
_chemical_formula_sum   'V1 Cu2 Si1'
_cell_volume   50.64
_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  V3  1  0.0  0.17  0.02  1.0
  Cu  Cu0  1  0.0  0.0  0.08  1.0
  Cu  Cu1  1  0.38  0.0  0.22  1.0
  Si  Si2  1  0.0  0.0  0.16  1.0

data_VCu2Si
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.75
_cell_length_b   4.34
_cell_length_c   4.96
_cell_angle_alpha   115.96
_cell_angle_beta   106.14
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VCu2Si
_chemical_formula_sum   'V1 Cu2 Si1'
_cell_volume   50.64
_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  V0  1  0.98  0.15  0.15  1.0
  Cu  Cu1  1  0.16  0.78  0.16  1.0
  Si  Si2  1  0.84  0.84  0.84  1.0
  Cu  Cu3  1  0.92  0.92  0.92  1.0

V Cu Cu Si