The material described by KPr(PO3)4 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 8-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. Pr(1) is bonded in a 8-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(12), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(11), one O(2), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(10), one O(2), one O(8), and one O(9) atom to form corner-sharing PO4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(11) is bonded in a 1-coordinate geometry to one K(1), one Pr(1), and one P(2) atom. In the second O site, O(12) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(1) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one P(2) and one P(4) atom. In the fifth O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(3) atom. In the sixth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(3) atom. In the seventh O site, O(5) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the eighth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(1) atom. In the ninth O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(2) atom. In the tenth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(4) atom. In the eleventh O site, O(9) is bonded in a 1-coordinate geometry to one K(1), one Pr(1), and one P(4) atom. In the twelfth O site, O(10) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. is represented by the CIF file [CIF]
data_KPr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.273
_cell_length_b   8.025
_cell_length_c   8.464
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   92.053
_symmetry_Int_Tables_number   1
_cell_volume   493.716
_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  0.771  0.721  0.194  1.0
  K  K1  1  0.229  0.279  0.694  1.0
  Pr  Pr2  1  0.265  0.757  0.380  1.0
  Pr  Pr3  1  0.735  0.243  0.880  1.0
  P  P4  1  0.503  0.380  0.233  1.0
  P  P5  1  0.497  0.620  0.733  1.0
  P  P6  1  0.934  0.099  0.257  1.0
  P  P7  1  0.066  0.901  0.757  1.0
  P  P8  1  0.123  0.396  0.126  1.0
  P  P9  1  0.877  0.604  0.626  1.0
  P  P10  1  0.603  0.105  0.459  1.0
  P  P11  1  0.397  0.895  0.959  1.0
  O  O12  1  0.044  0.274  0.260  1.0
  O  O13  1  0.956  0.726  0.760  1.0
  O  O14  1  0.814  0.129  0.411  1.0
  O  O15  1  0.186  0.871  0.911  1.0
  O  O16  1  0.960  0.651  0.472  1.0
  O  O17  1  0.040  0.349  0.972  1.0
  O  O18  1  0.110  0.570  0.183  1.0
  O  O19  1  0.890  0.430  0.683  1.0
  O  O20  1  0.332  0.345  0.120  1.0
  O  O21  1  0.668  0.655  0.620  1.0
  O  O22  1  0.671  0.388  0.134  1.0
  O  O23  1  0.329  0.612  0.634  1.0
  O  O24  1  0.186  0.926  0.616  1.0
  O  O25  1  0.814  0.074  0.116  1.0
  O  O26  1  0.416  0.822  0.118  1.0
  O  O27  1  0.584  0.178  0.618  1.0
  O  O28  1  0.541  0.930  0.429  1.0
  O  O29  1  0.459  0.070  0.929  1.0
  O  O30  1  0.493  0.215  0.335  1.0
  O  O31  1  0.507  0.785  0.835  1.0
  O  O32  1  0.064  0.965  0.288  1.0
  O  O33  1  0.936  0.035  0.788  1.0
  O  O34  1  0.472  0.527  0.335  1.0
  O  O35  1  0.528  0.473  0.835  1.0
[/CIF]
.
The material described by KPr(PO3)4 crystallizes in the monoclinic P2_1 space group. K(1) is bonded in a 8-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. Pr(1) is bonded in a 8-coordinate geometry to one O(11), one O(12), one O(3), one O(4), one O(6), one O(7), one O(8), and one O(9) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(12), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(11), one O(2), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(10), one O(2), one O(8), and one O(9) atom to form corner-sharing PO4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(11) is bonded in a 1-coordinate geometry to one K(1), one Pr(1), and one P(2) atom. In the second O site, O(12) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(1) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one P(2) and one P(4) atom. In the fifth O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(3) atom. In the sixth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(3) atom. In the seventh O site, O(5) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the eighth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(1) atom. In the ninth O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(2) atom. In the tenth O site, O(8) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(4) atom. In the eleventh O site, O(9) is bonded in a 1-coordinate geometry to one K(1), one Pr(1), and one P(4) atom. In the twelfth O site, O(10) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. is represented by the CIF file [CIF]
data_KPr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.273
_cell_length_b   8.025
_cell_length_c   8.464
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   92.053
_symmetry_Int_Tables_number   1
_cell_volume   493.716
_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  0.771  0.721  0.194  1.0
  K  K1  1  0.229  0.279  0.694  1.0
  Pr  Pr2  1  0.265  0.757  0.380  1.0
  Pr  Pr3  1  0.735  0.243  0.880  1.0
  P  P4  1  0.503  0.380  0.233  1.0
  P  P5  1  0.497  0.620  0.733  1.0
  P  P6  1  0.934  0.099  0.257  1.0
  P  P7  1  0.066  0.901  0.757  1.0
  P  P8  1  0.123  0.396  0.126  1.0
  P  P9  1  0.877  0.604  0.626  1.0
  P  P10  1  0.603  0.105  0.459  1.0
  P  P11  1  0.397  0.895  0.959  1.0
  O  O12  1  0.044  0.274  0.260  1.0
  O  O13  1  0.956  0.726  0.760  1.0
  O  O14  1  0.814  0.129  0.411  1.0
  O  O15  1  0.186  0.871  0.911  1.0
  O  O16  1  0.960  0.651  0.472  1.0
  O  O17  1  0.040  0.349  0.972  1.0
  O  O18  1  0.110  0.570  0.183  1.0
  O  O19  1  0.890  0.430  0.683  1.0
  O  O20  1  0.332  0.345  0.120  1.0
  O  O21  1  0.668  0.655  0.620  1.0
  O  O22  1  0.671  0.388  0.134  1.0
  O  O23  1  0.329  0.612  0.634  1.0
  O  O24  1  0.186  0.926  0.616  1.0
  O  O25  1  0.814  0.074  0.116  1.0
  O  O26  1  0.416  0.822  0.118  1.0
  O  O27  1  0.584  0.178  0.618  1.0
  O  O28  1  0.541  0.930  0.429  1.0
  O  O29  1  0.459  0.070  0.929  1.0
  O  O30  1  0.493  0.215  0.335  1.0
  O  O31  1  0.507  0.785  0.835  1.0
  O  O32  1  0.064  0.965  0.288  1.0
  O  O33  1  0.936  0.035  0.788  1.0
  O  O34  1  0.472  0.527  0.335  1.0
  O  O35  1  0.528  0.473  0.835  1.0
[/CIF]
.