The structure described by V2P4H3O16 crystallizes in the triclinic P1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(12), one O(14), one O(15), one O(2), one O(3), and one O(5) atom to form VO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the second V site, V(2) is bonded to one O(1), one O(11), one O(16), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(16), one O(2), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra and corners with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-45°. In the second P site, P(2) is bonded to one O(11), one O(12), one O(3), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra and corners with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-42°. In the third P site, P(3) is bonded to one O(10), one O(14), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra and corners with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-43°. In the fourth P site, P(4) is bonded to one O(1), one O(13), one O(15), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra and corners with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-45°. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(13) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(10) and one O(7) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one V(2) and one P(4) 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 P(2) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one P(1) and one H(1) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one V(2) and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one P(2) and one H(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one V(2) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one V(2) and one P(4) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one P(3) and one H(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(2) and one P(2) atom. In the twelfth O site, O(12) is bonded in a linear geometry to one V(1) and one P(2) atom. In the thirteenth O site, O(13) is bonded in a water-like geometry to one P(4) and one H(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 150 degrees geometry to one V(1) and one P(3) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one V(1) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a linear geometry to one V(2) and one P(1) atom. is represented by the CIF file [CIF]
data_V2P4H3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.963
_cell_length_b   7.326
_cell_length_c   8.002
_cell_angle_alpha   90.815
_cell_angle_beta   91.716
_cell_angle_gamma   102.259
_symmetry_Int_Tables_number   1
_cell_volume   284.160
_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  0.001  0.497  0.004  1.0
  V  V1  1  0.499  0.002  0.499  1.0
  P  P2  1  0.098  0.247  0.669  1.0
  P  P3  1  0.399  0.237  0.151  1.0
  P  P4  1  0.598  0.753  0.845  1.0
  P  P5  1  0.901  0.755  0.331  1.0
  H  H6  1  0.420  0.432  0.568  1.0
  H  H7  1  0.578  0.570  0.432  1.0
  H  H8  1  0.937  0.970  0.982  1.0
  O  O9  1  0.166  0.848  0.429  1.0
  O  O10  1  0.021  0.307  0.842  1.0
  O  O11  1  0.219  0.393  0.153  1.0
  O  O12  1  0.225  0.433  0.574  1.0
  O  O13  1  0.322  0.658  0.921  1.0
  O  O14  1  0.549  0.810  0.664  1.0
  O  O15  1  0.258  0.074  0.045  1.0
  O  O16  1  0.309  0.123  0.673  1.0
  O  O17  1  0.690  0.879  0.326  1.0
  O  O18  1  0.732  0.928  0.955  1.0
  O  O19  1  0.452  0.193  0.336  1.0
  O  O20  1  0.682  0.347  0.083  1.0
  O  O21  1  0.774  0.569  0.425  1.0
  O  O22  1  0.786  0.608  0.843  1.0
  O  O23  1  0.978  0.696  0.157  1.0
  O  O24  1  0.834  0.154  0.571  1.0
[/CIF]
.
The structure described by V2P4H3O16 crystallizes in the triclinic P1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(12), one O(14), one O(15), one O(2), one O(3), and one O(5) atom to form VO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. In the second V site, V(2) is bonded to one O(1), one O(11), one O(16), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(16), one O(2), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra and corners with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-45°. In the second P site, P(2) is bonded to one O(11), one O(12), one O(3), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra and corners with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-42°. In the third P site, P(3) is bonded to one O(10), one O(14), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra and corners with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-43°. In the fourth P site, P(4) is bonded to one O(1), one O(13), one O(15), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra and corners with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-45°. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(13) atom. In the third H site, H(3) is bonded in a distorted single-bond geometry to one O(10) and one O(7) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one V(2) and one P(4) 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 P(2) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one P(1) and one H(1) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one V(2) and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one P(2) and one H(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one V(2) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one V(2) and one P(4) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one P(3) and one H(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(2) and one P(2) atom. In the twelfth O site, O(12) is bonded in a linear geometry to one V(1) and one P(2) atom. In the thirteenth O site, O(13) is bonded in a water-like geometry to one P(4) and one H(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 150 degrees geometry to one V(1) and one P(3) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one V(1) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a linear geometry to one V(2) and one P(1) atom. is represented by the CIF file [CIF]
data_V2P4H3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.963
_cell_length_b   7.326
_cell_length_c   8.002
_cell_angle_alpha   90.815
_cell_angle_beta   91.716
_cell_angle_gamma   102.259
_symmetry_Int_Tables_number   1
_cell_volume   284.160
_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  0.001  0.497  0.004  1.0
  V  V1  1  0.499  0.002  0.499  1.0
  P  P2  1  0.098  0.247  0.669  1.0
  P  P3  1  0.399  0.237  0.151  1.0
  P  P4  1  0.598  0.753  0.845  1.0
  P  P5  1  0.901  0.755  0.331  1.0
  H  H6  1  0.420  0.432  0.568  1.0
  H  H7  1  0.578  0.570  0.432  1.0
  H  H8  1  0.937  0.970  0.982  1.0
  O  O9  1  0.166  0.848  0.429  1.0
  O  O10  1  0.021  0.307  0.842  1.0
  O  O11  1  0.219  0.393  0.153  1.0
  O  O12  1  0.225  0.433  0.574  1.0
  O  O13  1  0.322  0.658  0.921  1.0
  O  O14  1  0.549  0.810  0.664  1.0
  O  O15  1  0.258  0.074  0.045  1.0
  O  O16  1  0.309  0.123  0.673  1.0
  O  O17  1  0.690  0.879  0.326  1.0
  O  O18  1  0.732  0.928  0.955  1.0
  O  O19  1  0.452  0.193  0.336  1.0
  O  O20  1  0.682  0.347  0.083  1.0
  O  O21  1  0.774  0.569  0.425  1.0
  O  O22  1  0.786  0.608  0.843  1.0
  O  O23  1  0.978  0.696  0.157  1.0
  O  O24  1  0.834  0.154  0.571  1.0
[/CIF]
.