data_Na2VSiCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.4
_cell_length_b   6.62
_cell_length_c   9.04
_cell_angle_alpha   90.0
_cell_angle_beta   93.05
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2VSiCO7
_chemical_formula_sum   'Na4 V2 Si2 C2 O14'
_cell_volume   322.87
_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
  Na  Na0  1  0.84  0.31  0.53  1.0
  Na  Na1  1  0.84  0.0  0.53  1.0
  Na  Na2  1  0.08  0.31  0.5  1.0
  Na  Na3  1  0.08  0.62  0.5  1.0
  V  V4  1  0.53  0.96  0.28  1.0
  V  V5  1  0.39  0.65  0.75  1.0
  Si  Si6  1  0.22  0.65  0.61  1.0
  Si  Si7  1  0.7  0.96  0.42  1.0
  C  C8  1  0.03  0.96  0.76  1.0
  C  C9  1  0.89  0.65  0.27  1.0
  O  O10  1  0.18  0.65  0.04  1.0
  O  O11  1  0.75  0.96  0.98  1.0
  O  O12  1  0.25  0.96  0.27  1.0
  O  O13  1  0.68  0.65  0.76  1.0
  O  O14  1  0.11  0.96  0.8  1.0
  O  O15  1  0.81  0.65  0.22  1.0
  O  O16  1  0.34  0.96  0.83  1.0
  O  O17  1  0.58  0.65  0.2  1.0
  O  O18  1  0.01  0.65  0.17  1.0
  O  O19  1  0.91  0.96  0.86  1.0
  O  O20  1  0.56  0.32  0.46  1.0
  O  O21  1  0.56  0.99  0.46  1.0
  O  O22  1  0.36  0.62  0.57  1.0
  O  O23  1  0.36  0.3  0.57  1.0

data_Na2VSiCO7
_symmetry_space_group_name_H-M   P-1
_cell_length_a   5.4
_cell_length_b   6.62
_cell_length_c   9.04
_cell_angle_alpha   90.0
_cell_angle_beta   93.05
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Na2VSiCO7
_chemical_formula_sum   'Na4 V2 Si2 C2 O14'
_cell_volume   322.87
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  2  0.38  0.69  0.51  1.0
  Na  Na1  2  0.38  1.0  0.51  1.0
  V  V2  2  0.07  0.65  0.27  1.0
  Si  Si3  2  0.24  0.65  0.4  1.0
  C  C4  2  0.43  0.35  0.25  1.0
  O  O5  2  0.1  0.01  0.45  1.0
  O  O6  2  0.1  0.68  0.45  1.0
  O  O7  2  0.12  0.35  0.19  1.0
  O  O8  2  0.22  0.35  0.74  1.0
  O  O9  2  0.28  0.65  0.97  1.0
  O  O10  2  0.35  0.35  0.21  1.0
  O  O11  2  0.45  0.65  0.85  1.0

Na Na Na Na V V Si Si C C O O O O O O O O O O O O O O