The material structure described by KPr(PO3)4 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Pr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. 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 corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(1) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one P(1), and one P(2) atom. In the third O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(2) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one Pr(1) and one P(2) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to one Pr(1) and one P(1) atom. In the sixth O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KPr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.341
_cell_length_b   7.341
_cell_length_c   10.649
_cell_angle_alpha   100.754
_cell_angle_beta   100.754
_cell_angle_gamma   115.129
_symmetry_Int_Tables_number   1
_cell_volume   487.129
_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  0.683  0.317  0.250  1.0
  K  K1  1  0.317  0.683  0.750  1.0
  Pr  Pr2  1  0.620  0.380  0.750  1.0
  Pr  Pr3  1  0.380  0.620  0.250  1.0
  P  P4  1  0.213  0.869  0.502  1.0
  P  P5  1  0.131  0.787  0.998  1.0
  P  P6  1  0.787  0.131  0.498  1.0
  P  P7  1  0.869  0.213  0.002  1.0
  P  P8  1  0.194  0.237  0.440  1.0
  P  P9  1  0.763  0.806  0.060  1.0
  P  P10  1  0.806  0.763  0.560  1.0
  P  P11  1  0.237  0.194  0.940  1.0
  O  O12  1  0.192  0.681  0.406  1.0
  O  O13  1  0.319  0.808  0.094  1.0
  O  O14  1  0.808  0.319  0.594  1.0
  O  O15  1  0.681  0.192  0.906  1.0
  O  O16  1  0.145  0.997  0.416  1.0
  O  O17  1  0.003  0.855  0.084  1.0
  O  O18  1  0.855  0.003  0.584  1.0
  O  O19  1  0.997  0.145  0.916  1.0
  O  O20  1  0.412  0.005  0.612  1.0
  O  O21  1  0.995  0.588  0.888  1.0
  O  O22  1  0.588  0.995  0.388  1.0
  O  O23  1  0.005  0.412  0.112  1.0
  O  O24  1  0.036  0.786  0.576  1.0
  O  O25  1  0.214  0.964  0.924  1.0
  O  O26  1  0.964  0.214  0.424  1.0
  O  O27  1  0.786  0.036  0.076  1.0
  O  O28  1  0.330  0.361  0.579  1.0
  O  O29  1  0.639  0.670  0.921  1.0
  O  O30  1  0.670  0.639  0.421  1.0
  O  O31  1  0.361  0.330  0.079  1.0
  O  O32  1  0.257  0.302  0.325  1.0
  O  O33  1  0.698  0.743  0.175  1.0
  O  O34  1  0.743  0.698  0.675  1.0
  O  O35  1  0.302  0.257  0.825  1.0
[/CIF]
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The material structure described by KPr(PO3)4 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Pr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. 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 corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(3) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(1) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one P(1), and one P(2) atom. In the third O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Pr(1), and one P(2) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one Pr(1) and one P(2) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to one Pr(1) and one P(1) atom. In the sixth O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KPr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.341
_cell_length_b   7.341
_cell_length_c   10.649
_cell_angle_alpha   100.754
_cell_angle_beta   100.754
_cell_angle_gamma   115.129
_symmetry_Int_Tables_number   1
_cell_volume   487.129
_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  0.683  0.317  0.250  1.0
  K  K1  1  0.317  0.683  0.750  1.0
  Pr  Pr2  1  0.620  0.380  0.750  1.0
  Pr  Pr3  1  0.380  0.620  0.250  1.0
  P  P4  1  0.213  0.869  0.502  1.0
  P  P5  1  0.131  0.787  0.998  1.0
  P  P6  1  0.787  0.131  0.498  1.0
  P  P7  1  0.869  0.213  0.002  1.0
  P  P8  1  0.194  0.237  0.440  1.0
  P  P9  1  0.763  0.806  0.060  1.0
  P  P10  1  0.806  0.763  0.560  1.0
  P  P11  1  0.237  0.194  0.940  1.0
  O  O12  1  0.192  0.681  0.406  1.0
  O  O13  1  0.319  0.808  0.094  1.0
  O  O14  1  0.808  0.319  0.594  1.0
  O  O15  1  0.681  0.192  0.906  1.0
  O  O16  1  0.145  0.997  0.416  1.0
  O  O17  1  0.003  0.855  0.084  1.0
  O  O18  1  0.855  0.003  0.584  1.0
  O  O19  1  0.997  0.145  0.916  1.0
  O  O20  1  0.412  0.005  0.612  1.0
  O  O21  1  0.995  0.588  0.888  1.0
  O  O22  1  0.588  0.995  0.388  1.0
  O  O23  1  0.005  0.412  0.112  1.0
  O  O24  1  0.036  0.786  0.576  1.0
  O  O25  1  0.214  0.964  0.924  1.0
  O  O26  1  0.964  0.214  0.424  1.0
  O  O27  1  0.786  0.036  0.076  1.0
  O  O28  1  0.330  0.361  0.579  1.0
  O  O29  1  0.639  0.670  0.921  1.0
  O  O30  1  0.670  0.639  0.421  1.0
  O  O31  1  0.361  0.330  0.079  1.0
  O  O32  1  0.257  0.302  0.325  1.0
  O  O33  1  0.698  0.743  0.175  1.0
  O  O34  1  0.743  0.698  0.675  1.0
  O  O35  1  0.302  0.257  0.825  1.0
[/CIF]
.