The crystal structure described by VOPO4 crystallizes in the monoclinic C2/c space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form VO6 octahedra that share corners with two equivalent V(2)O6 octahedra and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 29°. In the second V site, V(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form VO6 octahedra that share corners with two equivalent V(1)O6 octahedra and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 29°. P(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra and corners with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-42°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(2) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(2) and one P(1) atom. is represented by the CIF file [CIF]
data_VPO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.368
_cell_length_b   7.368
_cell_length_c   10.309
_cell_angle_alpha   67.433
_cell_angle_beta   67.433
_cell_angle_gamma   41.213
_symmetry_Int_Tables_number   1
_cell_volume   336.283
_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  1  0.967  0.033  0.250  1.0
  V  V1  1  0.000  0.500  0.000  1.0
  V  V2  1  0.500  0.000  0.500  1.0
  V  V3  1  0.033  0.967  0.750  1.0
  P  P4  1  0.399  0.352  0.693  1.0
  P  P5  1  0.601  0.648  0.307  1.0
  P  P6  1  0.648  0.601  0.807  1.0
  P  P7  1  0.352  0.399  0.193  1.0
  O  O8  1  0.714  0.169  0.676  1.0
  O  O9  1  0.759  0.340  0.346  1.0
  O  O10  1  0.945  0.801  0.903  1.0
  O  O11  1  0.719  0.641  0.909  1.0
  O  O12  1  0.714  0.705  0.152  1.0
  O  O13  1  0.705  0.714  0.652  1.0
  O  O14  1  0.641  0.719  0.409  1.0
  O  O15  1  0.801  0.945  0.403  1.0
  O  O16  1  0.241  0.660  0.654  1.0
  O  O17  1  0.831  0.286  0.824  1.0
  O  O18  1  0.286  0.831  0.324  1.0
  O  O19  1  0.660  0.241  0.154  1.0
  O  O20  1  0.199  0.055  0.597  1.0
  O  O21  1  0.359  0.281  0.591  1.0
  O  O22  1  0.169  0.714  0.176  1.0
  O  O23  1  0.286  0.295  0.848  1.0
  O  O24  1  0.281  0.359  0.091  1.0
  O  O25  1  0.055  0.199  0.097  1.0
  O  O26  1  0.340  0.759  0.846  1.0
  O  O27  1  0.295  0.286  0.348  1.0
[/CIF]
.
The crystal structure described by VOPO4 crystallizes in the monoclinic C2/c space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form VO6 octahedra that share corners with two equivalent V(2)O6 octahedra and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 29°. In the second V site, V(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form VO6 octahedra that share corners with two equivalent V(1)O6 octahedra and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 29°. P(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra and corners with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-42°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(2) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(2) and one P(1) atom. is represented by the CIF file [CIF]
data_VPO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.368
_cell_length_b   7.368
_cell_length_c   10.309
_cell_angle_alpha   67.433
_cell_angle_beta   67.433
_cell_angle_gamma   41.213
_symmetry_Int_Tables_number   1
_cell_volume   336.283
_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  1  0.967  0.033  0.250  1.0
  V  V1  1  0.000  0.500  0.000  1.0
  V  V2  1  0.500  0.000  0.500  1.0
  V  V3  1  0.033  0.967  0.750  1.0
  P  P4  1  0.399  0.352  0.693  1.0
  P  P5  1  0.601  0.648  0.307  1.0
  P  P6  1  0.648  0.601  0.807  1.0
  P  P7  1  0.352  0.399  0.193  1.0
  O  O8  1  0.714  0.169  0.676  1.0
  O  O9  1  0.759  0.340  0.346  1.0
  O  O10  1  0.945  0.801  0.903  1.0
  O  O11  1  0.719  0.641  0.909  1.0
  O  O12  1  0.714  0.705  0.152  1.0
  O  O13  1  0.705  0.714  0.652  1.0
  O  O14  1  0.641  0.719  0.409  1.0
  O  O15  1  0.801  0.945  0.403  1.0
  O  O16  1  0.241  0.660  0.654  1.0
  O  O17  1  0.831  0.286  0.824  1.0
  O  O18  1  0.286  0.831  0.324  1.0
  O  O19  1  0.660  0.241  0.154  1.0
  O  O20  1  0.199  0.055  0.597  1.0
  O  O21  1  0.359  0.281  0.591  1.0
  O  O22  1  0.169  0.714  0.176  1.0
  O  O23  1  0.286  0.295  0.848  1.0
  O  O24  1  0.281  0.359  0.091  1.0
  O  O25  1  0.055  0.199  0.097  1.0
  O  O26  1  0.340  0.759  0.846  1.0
  O  O27  1  0.295  0.286  0.348  1.0
[/CIF]
.