data_[V4P8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  V  1.6300  1.3500  0.7775
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [15.5758]
_cell_length_b [4.3274]
_cell_length_c [9.8825]
_cell_angle_alpha [90.0000]
_cell_angle_beta [127.4946]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [VP2O7]
_chemical_formula_sum '[V4 P8 O28]'
_cell_volume [528.4956]
_cell_formula_units_Z [4]
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  4  0.0000  0.2652  0.2500  1.0
  P  P1  8  0.1711  0.5043  0.6562  1.0
  O  O2  8  0.0929  0.3515  0.1771  1.0
  O  O3  8  0.1304  0.3602  0.4889  1.0
  O  O4  8  0.2406  0.7449  0.3064  1.0
  O  O5  4  0.0000  0.1119  0.7500  1.0
]