The structure described by V3(PO4)2 crystallizes in the monoclinic P2_1/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(3), one O(5), one O(6), and two equivalent O(2) atoms. In the second V site, V(2) is bonded to one O(1), one O(3), one O(5), one O(6), and one O(7) atom to form VO5 square pyramids that share  a cornercorner with one V(3)O5 square pyramid, corners with two equivalent P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. In the third V site, V(3) is bonded to one O(7), two equivalent O(4), and two equivalent O(8) atoms to form distorted VO5 square pyramids that share  a cornercorner with one V(2)O5 square pyramid, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and edges with two equivalent V(3)O5 square pyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent V(2)O5 square pyramids and corners with two equivalent V(3)O5 square pyramids. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with three equivalent V(2)O5 square pyramids and corners with three equivalent V(3)O5 square pyramids. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one P(2) atom. In the second O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent V(3) and one P(2) atom. In the third O site, O(1) is bonded in a trigonal planar geometry to one V(1), one V(2), and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent V(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one P(1) atom. In the sixth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent V(3) and one P(1) atom. In the seventh O site, O(5) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one P(2) atom. In the eighth O site, O(6) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one P(2) atom. is represented by the CIF file [CIF]
data_V3(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.619
_cell_length_b   6.395
_cell_length_c   8.759
_cell_angle_alpha   80.600
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   642.121
_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  0.385  0.363  0.070  1.0
  V  V1  1  0.115  0.863  0.070  1.0
  V  V2  1  0.086  0.331  0.277  1.0
  V  V3  1  0.414  0.831  0.277  1.0
  V  V4  1  0.690  0.383  0.361  1.0
  V  V5  1  0.810  0.883  0.361  1.0
  V  V6  1  0.190  0.117  0.639  1.0
  V  V7  1  0.310  0.617  0.639  1.0
  V  V8  1  0.586  0.169  0.723  1.0
  V  V9  1  0.914  0.669  0.723  1.0
  V  V10  1  0.885  0.137  0.930  1.0
  V  V11  1  0.615  0.637  0.930  1.0
  P  P12  1  0.633  0.113  0.090  1.0
  P  P13  1  0.867  0.613  0.090  1.0
  P  P14  1  0.412  0.305  0.397  1.0
  P  P15  1  0.088  0.805  0.397  1.0
  P  P16  1  0.912  0.195  0.603  1.0
  P  P17  1  0.588  0.695  0.603  1.0
  P  P18  1  0.133  0.387  0.910  1.0
  P  P19  1  0.367  0.887  0.910  1.0
  O  O20  1  0.199  0.396  0.065  1.0
  O  O21  1  0.567  0.328  0.074  1.0
  O  O22  1  0.301  0.896  0.065  1.0
  O  O23  1  0.933  0.828  0.074  1.0
  O  O24  1  0.939  0.409  0.132  1.0
  O  O25  1  0.561  0.909  0.132  1.0
  O  O26  1  0.720  0.128  0.224  1.0
  O  O27  1  0.079  0.008  0.272  1.0
  O  O28  1  0.780  0.628  0.224  1.0
  O  O29  1  0.372  0.139  0.298  1.0
  O  O30  1  0.421  0.508  0.272  1.0
  O  O31  1  0.128  0.639  0.298  1.0
  O  O32  1  0.531  0.252  0.478  1.0
  O  O33  1  0.819  0.166  0.481  1.0
  O  O34  1  0.969  0.752  0.478  1.0
  O  O35  1  0.319  0.334  0.519  1.0
  O  O36  1  0.681  0.666  0.481  1.0
  O  O37  1  0.031  0.248  0.522  1.0
  O  O38  1  0.181  0.834  0.519  1.0
  O  O39  1  0.469  0.748  0.522  1.0
  O  O40  1  0.872  0.361  0.702  1.0
  O  O41  1  0.579  0.492  0.728  1.0
  O  O42  1  0.628  0.861  0.702  1.0
  O  O43  1  0.220  0.372  0.776  1.0
  O  O44  1  0.921  0.992  0.728  1.0
  O  O45  1  0.280  0.872  0.776  1.0
  O  O46  1  0.439  0.091  0.868  1.0
  O  O47  1  0.061  0.591  0.868  1.0
  O  O48  1  0.067  0.172  0.926  1.0
  O  O49  1  0.699  0.104  0.935  1.0
  O  O50  1  0.433  0.672  0.926  1.0
  O  O51  1  0.801  0.604  0.935  1.0
[/CIF]
.
The structure described by V3(PO4)2 crystallizes in the monoclinic P2_1/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(3), one O(5), one O(6), and two equivalent O(2) atoms. In the second V site, V(2) is bonded to one O(1), one O(3), one O(5), one O(6), and one O(7) atom to form VO5 square pyramids that share  a cornercorner with one V(3)O5 square pyramid, corners with two equivalent P(1)O4 tetrahedra, and corners with three equivalent P(2)O4 tetrahedra. In the third V site, V(3) is bonded to one O(7), two equivalent O(4), and two equivalent O(8) atoms to form distorted VO5 square pyramids that share  a cornercorner with one V(2)O5 square pyramid, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and edges with two equivalent V(3)O5 square pyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent V(2)O5 square pyramids and corners with two equivalent V(3)O5 square pyramids. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with three equivalent V(2)O5 square pyramids and corners with three equivalent V(3)O5 square pyramids. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one P(2) atom. In the second O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent V(3) and one P(2) atom. In the third O site, O(1) is bonded in a trigonal planar geometry to one V(1), one V(2), and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent V(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one P(1) atom. In the sixth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent V(3) and one P(1) atom. In the seventh O site, O(5) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one P(2) atom. In the eighth O site, O(6) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one P(2) atom. is represented by the CIF file [CIF]
data_V3(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.619
_cell_length_b   6.395
_cell_length_c   8.759
_cell_angle_alpha   80.600
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   642.121
_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  0.385  0.363  0.070  1.0
  V  V1  1  0.115  0.863  0.070  1.0
  V  V2  1  0.086  0.331  0.277  1.0
  V  V3  1  0.414  0.831  0.277  1.0
  V  V4  1  0.690  0.383  0.361  1.0
  V  V5  1  0.810  0.883  0.361  1.0
  V  V6  1  0.190  0.117  0.639  1.0
  V  V7  1  0.310  0.617  0.639  1.0
  V  V8  1  0.586  0.169  0.723  1.0
  V  V9  1  0.914  0.669  0.723  1.0
  V  V10  1  0.885  0.137  0.930  1.0
  V  V11  1  0.615  0.637  0.930  1.0
  P  P12  1  0.633  0.113  0.090  1.0
  P  P13  1  0.867  0.613  0.090  1.0
  P  P14  1  0.412  0.305  0.397  1.0
  P  P15  1  0.088  0.805  0.397  1.0
  P  P16  1  0.912  0.195  0.603  1.0
  P  P17  1  0.588  0.695  0.603  1.0
  P  P18  1  0.133  0.387  0.910  1.0
  P  P19  1  0.367  0.887  0.910  1.0
  O  O20  1  0.199  0.396  0.065  1.0
  O  O21  1  0.567  0.328  0.074  1.0
  O  O22  1  0.301  0.896  0.065  1.0
  O  O23  1  0.933  0.828  0.074  1.0
  O  O24  1  0.939  0.409  0.132  1.0
  O  O25  1  0.561  0.909  0.132  1.0
  O  O26  1  0.720  0.128  0.224  1.0
  O  O27  1  0.079  0.008  0.272  1.0
  O  O28  1  0.780  0.628  0.224  1.0
  O  O29  1  0.372  0.139  0.298  1.0
  O  O30  1  0.421  0.508  0.272  1.0
  O  O31  1  0.128  0.639  0.298  1.0
  O  O32  1  0.531  0.252  0.478  1.0
  O  O33  1  0.819  0.166  0.481  1.0
  O  O34  1  0.969  0.752  0.478  1.0
  O  O35  1  0.319  0.334  0.519  1.0
  O  O36  1  0.681  0.666  0.481  1.0
  O  O37  1  0.031  0.248  0.522  1.0
  O  O38  1  0.181  0.834  0.519  1.0
  O  O39  1  0.469  0.748  0.522  1.0
  O  O40  1  0.872  0.361  0.702  1.0
  O  O41  1  0.579  0.492  0.728  1.0
  O  O42  1  0.628  0.861  0.702  1.0
  O  O43  1  0.220  0.372  0.776  1.0
  O  O44  1  0.921  0.992  0.728  1.0
  O  O45  1  0.280  0.872  0.776  1.0
  O  O46  1  0.439  0.091  0.868  1.0
  O  O47  1  0.061  0.591  0.868  1.0
  O  O48  1  0.067  0.172  0.926  1.0
  O  O49  1  0.699  0.104  0.935  1.0
  O  O50  1  0.433  0.672  0.926  1.0
  O  O51  1  0.801  0.604  0.935  1.0
[/CIF]
.