The compound described by V4P2O13 crystallizes in the triclinic P1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(12), one O(2), one O(4), one O(5), and one O(7) atom to form distorted VO6 octahedra that share  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-28°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(8) atom. In the third V site, V(3) is bonded to one O(11), one O(13), one O(2), one O(5), one O(7), and one O(9) atom to form distorted VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-10°. In the fourth V site, V(4) is bonded to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 10-28°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(13), one O(2), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, and corners with three equivalent V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-57°. In the second P site, P(2) is bonded to one O(1), one O(12), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, and corners with three equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-56°. There are thirteen 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(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1), one V(3), and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one V(2) and one V(4) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one V(4) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one V(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(2), one V(4), and one P(1) 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(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one V(2), one V(4), and one P(2) atom. In the ninth O site, O(9) is bonded in a linear geometry to one V(3) and one V(4) atom. In the tenth O site, O(10) is bonded in a linear geometry to one V(2) and one V(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one V(3) and one P(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one V(1) and one P(2) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one V(3) and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_V4P2O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.879
_cell_length_b   4.893
_cell_length_c   8.650
_cell_angle_alpha   88.611
_cell_angle_beta   100.148
_cell_angle_gamma   99.259
_symmetry_Int_Tables_number   1
_cell_volume   200.643
_cell_formula_units_Z   1
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  0.747  0.044  0.315  1.0
  V  V1  1  0.929  0.826  0.642  1.0
  V  V2  1  0.434  0.537  0.060  1.0
  V  V3  1  0.585  0.258  0.707  1.0
  P  P4  1  0.987  0.991  0.999  1.0
  P  P5  1  0.246  0.567  0.413  1.0
  O  O6  1  0.007  0.733  0.435  1.0
  O  O7  1  0.797  0.850  0.115  1.0
  O  O8  1  0.937  0.508  0.724  1.0
  O  O9  1  0.712  0.075  0.532  1.0
  O  O10  1  0.593  0.283  0.210  1.0
  O  O11  1  0.802  0.980  0.830  1.0
  O  O12  1  0.411  0.720  0.290  1.0
  O  O13  1  0.454  0.558  0.569  1.0
  O  O14  1  0.528  0.433  0.898  1.0
  O  O15  1  0.263  0.038  0.688  1.0
  O  O16  1  0.079  0.293  0.043  1.0
  O  O17  1  0.118  0.276  0.359  1.0
  O  O18  1  0.229  0.839  0.991  1.0
[/CIF]
.
The compound described by V4P2O13 crystallizes in the triclinic P1 space group. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(12), one O(2), one O(4), one O(5), and one O(7) atom to form distorted VO6 octahedra that share  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-28°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(3), one O(4), one O(6), and one O(8) atom. In the third V site, V(3) is bonded to one O(11), one O(13), one O(2), one O(5), one O(7), and one O(9) atom to form distorted VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-10°. In the fourth V site, V(4) is bonded to one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 10-28°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(13), one O(2), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, and corners with three equivalent V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-57°. In the second P site, P(2) is bonded to one O(1), one O(12), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, and corners with three equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-56°. There are thirteen 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(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1), one V(3), and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one V(2) and one V(4) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one V(4) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one V(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(2), one V(4), and one P(1) 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(2) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one V(2), one V(4), and one P(2) atom. In the ninth O site, O(9) is bonded in a linear geometry to one V(3) and one V(4) atom. In the tenth O site, O(10) is bonded in a linear geometry to one V(2) and one V(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one V(3) and one P(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one V(1) and one P(2) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one V(3) and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_V4P2O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.879
_cell_length_b   4.893
_cell_length_c   8.650
_cell_angle_alpha   88.611
_cell_angle_beta   100.148
_cell_angle_gamma   99.259
_symmetry_Int_Tables_number   1
_cell_volume   200.643
_cell_formula_units_Z   1
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  0.747  0.044  0.315  1.0
  V  V1  1  0.929  0.826  0.642  1.0
  V  V2  1  0.434  0.537  0.060  1.0
  V  V3  1  0.585  0.258  0.707  1.0
  P  P4  1  0.987  0.991  0.999  1.0
  P  P5  1  0.246  0.567  0.413  1.0
  O  O6  1  0.007  0.733  0.435  1.0
  O  O7  1  0.797  0.850  0.115  1.0
  O  O8  1  0.937  0.508  0.724  1.0
  O  O9  1  0.712  0.075  0.532  1.0
  O  O10  1  0.593  0.283  0.210  1.0
  O  O11  1  0.802  0.980  0.830  1.0
  O  O12  1  0.411  0.720  0.290  1.0
  O  O13  1  0.454  0.558  0.569  1.0
  O  O14  1  0.528  0.433  0.898  1.0
  O  O15  1  0.263  0.038  0.688  1.0
  O  O16  1  0.079  0.293  0.043  1.0
  O  O17  1  0.118  0.276  0.359  1.0
  O  O18  1  0.229  0.839  0.991  1.0
[/CIF]
.