data_Na2VSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.18
_cell_length_b   6.18
_cell_length_c   2.7
_cell_angle_alpha   102.05
_cell_angle_beta   102.05
_cell_angle_gamma   129.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2VSi
_chemical_formula_sum   'Na2 V1 Si1'
_cell_volume   69.77
_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
  Na  Na0  1  0.67  0.21  0.18  1.0
  Na  Na1  1  0.67  0.79  0.18  1.0
  V  V3  1  0.65  0.0  0.0  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0

data_Na2VSi
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.7
_cell_length_b   4.63
_cell_length_c   6.18
_cell_angle_alpha   111.63
_cell_angle_beta   102.05
_cell_angle_gamma   91.53
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2VSi
_chemical_formula_sum   'Na2 V1 Si1'
_cell_volume   69.77
_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
  Na  Na0  1  0.39  0.21  0.88  1.0
  Na  Na1  1  0.97  0.79  0.46  1.0
  V  V2  1  0.0  0.0  0.65  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0

Na Na V Si