The crystal structure described by K2V3P4O17 crystallizes in the monoclinic Pc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(17), one O(7), two equivalent O(1), two equivalent O(14), and two equivalent O(5) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(17), one O(6), one O(8), two equivalent O(13), and two equivalent O(2) atoms. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(12), one O(15), one O(7), and one O(9) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(3)O4 tetrahedra. In the second V site, V(2) is bonded to one O(10), one O(11), one O(16), one O(2), and one O(8) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with two equivalent P(4)O4 tetrahedra. In the third V site, V(3) is bonded to one O(13), one O(14), one O(17), one O(5), and one O(6) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(13), one O(3), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(10), one O(14), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(2)O5 trigonal bipyramids. In the third P site, P(3) is bonded to one O(12), one O(15), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(1)O5 trigonal bipyramids. In the fourth P site, P(4) is bonded to one O(11), one O(16), one O(3), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(2)O5 trigonal bipyramids. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one V(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(2) and one V(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to two equivalent K(1), one V(3), and one P(4) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one K(2), one V(3), and one P(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one K(1), one V(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one K(2), one V(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(2) and one P(2) atom. In the eleventh O site, O(11) is bonded in a linear geometry to one V(2) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one V(1) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to two equivalent K(2), one V(3), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one V(3), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one V(1) and one P(3) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one V(2) and one P(4) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to one K(1), one K(2), and one V(3) atom. is represented by the CIF file [CIF]
data_K2V3P4O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.099
_cell_length_b   9.383
_cell_length_c   18.772
_cell_angle_alpha   65.435
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   816.848
_cell_formula_units_Z   2
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
  K  K0  1  0.752  0.677  0.329  1.0
  K  K1  1  0.231  0.323  0.170  1.0
  K  K2  1  0.769  0.323  0.670  1.0
  K  K3  1  0.248  0.677  0.829  1.0
  V  V4  1  0.721  0.862  0.654  1.0
  V  V5  1  0.222  0.138  0.847  1.0
  V  V6  1  0.778  0.138  0.347  1.0
  V  V7  1  0.279  0.862  0.154  1.0
  V  V8  1  0.349  0.498  0.501  1.0
  V  V9  1  0.651  0.498  0.001  1.0
  P  P10  1  0.227  0.698  0.604  1.0
  P  P11  1  0.728  0.301  0.897  1.0
  P  P12  1  0.272  0.301  0.397  1.0
  P  P13  1  0.773  0.698  0.104  1.0
  P  P14  1  0.220  0.125  0.570  1.0
  P  P15  1  0.722  0.875  0.930  1.0
  P  P16  1  0.278  0.875  0.430  1.0
  P  P17  1  0.780  0.125  0.070  1.0
  O  O18  1  0.752  0.820  0.747  1.0
  O  O19  1  0.252  0.180  0.754  1.0
  O  O20  1  0.748  0.180  0.254  1.0
  O  O21  1  0.248  0.820  0.247  1.0
  O  O22  1  0.706  0.843  0.022  1.0
  O  O23  1  0.206  0.156  0.479  1.0
  O  O24  1  0.794  0.156  0.979  1.0
  O  O25  1  0.294  0.843  0.522  1.0
  O  O26  1  0.738  0.714  0.927  1.0
  O  O27  1  0.225  0.286  0.573  1.0
  O  O28  1  0.775  0.286  0.073  1.0
  O  O29  1  0.262  0.714  0.427  1.0
  O  O30  1  0.426  0.708  0.662  1.0
  O  O31  1  0.929  0.293  0.838  1.0
  O  O32  1  0.071  0.293  0.338  1.0
  O  O33  1  0.574  0.708  0.162  1.0
  O  O34  1  0.944  0.716  0.627  1.0
  O  O35  1  0.446  0.283  0.874  1.0
  O  O36  1  0.554  0.283  0.374  1.0
  O  O37  1  0.056  0.716  0.127  1.0
  O  O38  1  0.969  0.968  0.896  1.0
  O  O39  1  0.468  0.033  0.604  1.0
  O  O40  1  0.532  0.033  0.104  1.0
  O  O41  1  0.031  0.968  0.396  1.0
  O  O42  1  0.749  0.546  0.092  1.0
  O  O43  1  0.245  0.452  0.409  1.0
  O  O44  1  0.755  0.452  0.909  1.0
  O  O45  1  0.251  0.546  0.592  1.0
  O  O46  1  0.970  0.038  0.606  1.0
  O  O47  1  0.471  0.960  0.894  1.0
  O  O48  1  0.529  0.960  0.394  1.0
  O  O49  1  0.030  0.038  0.106  1.0
  O  O50  1  0.329  0.494  0.999  1.0
  O  O51  1  0.671  0.494  0.499  1.0
[/CIF]
.
The crystal structure described by K2V3P4O17 crystallizes in the monoclinic Pc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one O(17), one O(7), two equivalent O(1), two equivalent O(14), and two equivalent O(5) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one O(17), one O(6), one O(8), two equivalent O(13), and two equivalent O(2) atoms. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(12), one O(15), one O(7), and one O(9) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(3)O4 tetrahedra. In the second V site, V(2) is bonded to one O(10), one O(11), one O(16), one O(2), and one O(8) atom to form distorted VO5 trigonal bipyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with two equivalent P(4)O4 tetrahedra. In the third V site, V(3) is bonded to one O(13), one O(14), one O(17), one O(5), and one O(6) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(13), one O(3), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(10), one O(14), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(2)O5 trigonal bipyramids. In the third P site, P(3) is bonded to one O(12), one O(15), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(1)O5 trigonal bipyramids. In the fourth P site, P(4) is bonded to one O(11), one O(16), one O(3), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and corners with two equivalent V(2)O5 trigonal bipyramids. There are seventeen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one V(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(2) and one V(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to two equivalent K(1), one V(3), and one P(4) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one K(2), one V(3), and one P(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one K(1), one V(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one K(2), one V(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(2) and one P(2) atom. In the eleventh O site, O(11) is bonded in a linear geometry to one V(2) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted linear geometry to one V(1) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to two equivalent K(2), one V(3), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one V(3), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one V(1) and one P(3) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one V(2) and one P(4) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to one K(1), one K(2), and one V(3) atom. is represented by the CIF file [CIF]
data_K2V3P4O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.099
_cell_length_b   9.383
_cell_length_c   18.772
_cell_angle_alpha   65.435
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   816.848
_cell_formula_units_Z   2
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
  K  K0  1  0.752  0.677  0.329  1.0
  K  K1  1  0.231  0.323  0.170  1.0
  K  K2  1  0.769  0.323  0.670  1.0
  K  K3  1  0.248  0.677  0.829  1.0
  V  V4  1  0.721  0.862  0.654  1.0
  V  V5  1  0.222  0.138  0.847  1.0
  V  V6  1  0.778  0.138  0.347  1.0
  V  V7  1  0.279  0.862  0.154  1.0
  V  V8  1  0.349  0.498  0.501  1.0
  V  V9  1  0.651  0.498  0.001  1.0
  P  P10  1  0.227  0.698  0.604  1.0
  P  P11  1  0.728  0.301  0.897  1.0
  P  P12  1  0.272  0.301  0.397  1.0
  P  P13  1  0.773  0.698  0.104  1.0
  P  P14  1  0.220  0.125  0.570  1.0
  P  P15  1  0.722  0.875  0.930  1.0
  P  P16  1  0.278  0.875  0.430  1.0
  P  P17  1  0.780  0.125  0.070  1.0
  O  O18  1  0.752  0.820  0.747  1.0
  O  O19  1  0.252  0.180  0.754  1.0
  O  O20  1  0.748  0.180  0.254  1.0
  O  O21  1  0.248  0.820  0.247  1.0
  O  O22  1  0.706  0.843  0.022  1.0
  O  O23  1  0.206  0.156  0.479  1.0
  O  O24  1  0.794  0.156  0.979  1.0
  O  O25  1  0.294  0.843  0.522  1.0
  O  O26  1  0.738  0.714  0.927  1.0
  O  O27  1  0.225  0.286  0.573  1.0
  O  O28  1  0.775  0.286  0.073  1.0
  O  O29  1  0.262  0.714  0.427  1.0
  O  O30  1  0.426  0.708  0.662  1.0
  O  O31  1  0.929  0.293  0.838  1.0
  O  O32  1  0.071  0.293  0.338  1.0
  O  O33  1  0.574  0.708  0.162  1.0
  O  O34  1  0.944  0.716  0.627  1.0
  O  O35  1  0.446  0.283  0.874  1.0
  O  O36  1  0.554  0.283  0.374  1.0
  O  O37  1  0.056  0.716  0.127  1.0
  O  O38  1  0.969  0.968  0.896  1.0
  O  O39  1  0.468  0.033  0.604  1.0
  O  O40  1  0.532  0.033  0.104  1.0
  O  O41  1  0.031  0.968  0.396  1.0
  O  O42  1  0.749  0.546  0.092  1.0
  O  O43  1  0.245  0.452  0.409  1.0
  O  O44  1  0.755  0.452  0.909  1.0
  O  O45  1  0.251  0.546  0.592  1.0
  O  O46  1  0.970  0.038  0.606  1.0
  O  O47  1  0.471  0.960  0.894  1.0
  O  O48  1  0.529  0.960  0.394  1.0
  O  O49  1  0.030  0.038  0.106  1.0
  O  O50  1  0.329  0.494  0.999  1.0
  O  O51  1  0.671  0.494  0.499  1.0
[/CIF]
.