The structure described by VPO4 crystallizes in the monoclinic C2/c space group. There are three inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. In the second V site, V(2) is bonded in a distorted square co-planar geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. In the third V site, V(3) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms to form distorted VO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-50°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one P(1) atom. In the second O site, O(2) is bonded in a linear geometry to one V(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one V(1), one V(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one V(3) and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(1), one V(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_VPO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.148
_cell_length_b   9.148
_cell_length_c   15.862
_cell_angle_alpha   61.951
_cell_angle_beta   61.951
_cell_angle_gamma   32.584
_symmetry_Int_Tables_number   1
_cell_volume   623.180
_cell_formula_units_Z   8
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  0.404  0.817  0.017  1.0
  V  V1  1  0.183  0.596  0.483  1.0
  V  V2  1  0.596  0.183  0.983  1.0
  V  V3  1  0.000  0.500  0.000  1.0
  V  V4  1  0.817  0.404  0.517  1.0
  V  V5  1  0.664  0.336  0.750  1.0
  V  V6  1  0.336  0.664  0.250  1.0
  V  V7  1  0.500  0.000  0.500  1.0
  P  P8  1  0.489  0.941  0.143  1.0
  P  P9  1  0.795  0.219  0.384  1.0
  P  P10  1  0.511  0.059  0.857  1.0
  P  P11  1  0.219  0.795  0.884  1.0
  P  P12  1  0.941  0.489  0.643  1.0
  P  P13  1  0.059  0.511  0.357  1.0
  P  P14  1  0.205  0.781  0.616  1.0
  P  P15  1  0.781  0.205  0.116  1.0
  O  O16  1  0.221  0.225  0.923  1.0
  O  O17  1  0.707  0.170  0.065  1.0
  O  O18  1  0.225  0.221  0.423  1.0
  O  O19  1  0.594  0.231  0.450  1.0
  O  O20  1  0.685  0.774  0.932  1.0
  O  O21  1  0.669  0.430  0.292  1.0
  O  O22  1  0.769  0.406  0.050  1.0
  O  O23  1  0.916  0.079  0.862  1.0
  O  O24  1  0.406  0.769  0.550  1.0
  O  O25  1  0.830  0.293  0.435  1.0
  O  O26  1  0.578  0.163  0.866  1.0
  O  O27  1  0.964  0.434  0.742  1.0
  O  O28  1  0.293  0.830  0.935  1.0
  O  O29  1  0.079  0.916  0.362  1.0
  O  O30  1  0.779  0.775  0.077  1.0
  O  O31  1  0.422  0.837  0.134  1.0
  O  O32  1  0.434  0.964  0.242  1.0
  O  O33  1  0.231  0.594  0.950  1.0
  O  O34  1  0.163  0.578  0.366  1.0
  O  O35  1  0.036  0.566  0.258  1.0
  O  O36  1  0.921  0.084  0.638  1.0
  O  O37  1  0.774  0.685  0.432  1.0
  O  O38  1  0.084  0.921  0.138  1.0
  O  O39  1  0.430  0.669  0.792  1.0
  O  O40  1  0.170  0.707  0.565  1.0
  O  O41  1  0.775  0.779  0.577  1.0
  O  O42  1  0.566  0.036  0.758  1.0
  O  O43  1  0.226  0.315  0.568  1.0
  O  O44  1  0.315  0.226  0.068  1.0
  O  O45  1  0.570  0.331  0.208  1.0
  O  O46  1  0.331  0.570  0.708  1.0
  O  O47  1  0.837  0.422  0.634  1.0
[/CIF]
.
The structure described by VPO4 crystallizes in the monoclinic C2/c space group. There are three inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. In the second V site, V(2) is bonded in a distorted square co-planar geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. In the third V site, V(3) is bonded to two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms to form distorted VO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-50°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one P(1) atom. In the second O site, O(2) is bonded in a linear geometry to one V(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one V(1), one V(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one V(3) and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(1), one V(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_VPO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.148
_cell_length_b   9.148
_cell_length_c   15.862
_cell_angle_alpha   61.951
_cell_angle_beta   61.951
_cell_angle_gamma   32.584
_symmetry_Int_Tables_number   1
_cell_volume   623.180
_cell_formula_units_Z   8
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  0.404  0.817  0.017  1.0
  V  V1  1  0.183  0.596  0.483  1.0
  V  V2  1  0.596  0.183  0.983  1.0
  V  V3  1  0.000  0.500  0.000  1.0
  V  V4  1  0.817  0.404  0.517  1.0
  V  V5  1  0.664  0.336  0.750  1.0
  V  V6  1  0.336  0.664  0.250  1.0
  V  V7  1  0.500  0.000  0.500  1.0
  P  P8  1  0.489  0.941  0.143  1.0
  P  P9  1  0.795  0.219  0.384  1.0
  P  P10  1  0.511  0.059  0.857  1.0
  P  P11  1  0.219  0.795  0.884  1.0
  P  P12  1  0.941  0.489  0.643  1.0
  P  P13  1  0.059  0.511  0.357  1.0
  P  P14  1  0.205  0.781  0.616  1.0
  P  P15  1  0.781  0.205  0.116  1.0
  O  O16  1  0.221  0.225  0.923  1.0
  O  O17  1  0.707  0.170  0.065  1.0
  O  O18  1  0.225  0.221  0.423  1.0
  O  O19  1  0.594  0.231  0.450  1.0
  O  O20  1  0.685  0.774  0.932  1.0
  O  O21  1  0.669  0.430  0.292  1.0
  O  O22  1  0.769  0.406  0.050  1.0
  O  O23  1  0.916  0.079  0.862  1.0
  O  O24  1  0.406  0.769  0.550  1.0
  O  O25  1  0.830  0.293  0.435  1.0
  O  O26  1  0.578  0.163  0.866  1.0
  O  O27  1  0.964  0.434  0.742  1.0
  O  O28  1  0.293  0.830  0.935  1.0
  O  O29  1  0.079  0.916  0.362  1.0
  O  O30  1  0.779  0.775  0.077  1.0
  O  O31  1  0.422  0.837  0.134  1.0
  O  O32  1  0.434  0.964  0.242  1.0
  O  O33  1  0.231  0.594  0.950  1.0
  O  O34  1  0.163  0.578  0.366  1.0
  O  O35  1  0.036  0.566  0.258  1.0
  O  O36  1  0.921  0.084  0.638  1.0
  O  O37  1  0.774  0.685  0.432  1.0
  O  O38  1  0.084  0.921  0.138  1.0
  O  O39  1  0.430  0.669  0.792  1.0
  O  O40  1  0.170  0.707  0.565  1.0
  O  O41  1  0.775  0.779  0.577  1.0
  O  O42  1  0.566  0.036  0.758  1.0
  O  O43  1  0.226  0.315  0.568  1.0
  O  O44  1  0.315  0.226  0.068  1.0
  O  O45  1  0.570  0.331  0.208  1.0
  O  O46  1  0.331  0.570  0.708  1.0
  O  O47  1  0.837  0.422  0.634  1.0
[/CIF]
.