The structure described by K2Nd(PO3)5 crystallizes in the monoclinic Cc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one O(11), one O(12), one O(13), one O(14), one O(2), one O(4), one O(6), one O(7), and one O(8) atom. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(11), one O(13), one O(15), one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. Nd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(2), one O(7), one O(8), and one O(9) atom. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(15), one O(4), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(11), one O(12), one O(5), and one O(8) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(13), one O(3), one O(4), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(14), one O(15), one O(2), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the fifth P site, P(5) is bonded to one O(1), one O(12), one O(3), and one O(9) atom to form corner-sharing PO4 tetrahedra. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Nd(1) and one P(5) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Nd(1), and one P(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(2), one P(3), and one P(5) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(1), and one P(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(2) and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Nd(1), and one P(3) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Nd(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(2), one Nd(1), and one P(5) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Nd(1) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(2), and one P(5) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Nd(1), and one P(3) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one K(1), one Nd(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one K(2), one P(1), and one P(4) atom. is represented by the CIF file [CIF]
data_K2Nd(PO3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.257
_cell_length_b   7.257
_cell_length_c   13.410
_cell_angle_alpha   89.596
_cell_angle_beta   89.596
_cell_angle_gamma   108.101
_symmetry_Int_Tables_number   1
_cell_volume   671.245
_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  0.795  0.559  0.943  1.0
  K  K1  1  0.312  0.701  0.746  1.0
  K  K2  1  0.559  0.795  0.443  1.0
  K  K3  1  0.701  0.312  0.246  1.0
  Nd  Nd4  1  0.904  0.096  0.750  1.0
  Nd  Nd5  1  0.096  0.904  0.250  1.0
  P  P6  1  0.003  0.609  0.490  1.0
  P  P7  1  0.236  0.386  0.941  1.0
  P  P8  1  0.771  0.562  0.674  1.0
  P  P9  1  0.965  0.185  0.470  1.0
  P  P10  1  0.386  0.236  0.441  1.0
  P  P11  1  0.445  0.196  0.659  1.0
  P  P12  1  0.196  0.445  0.159  1.0
  P  P13  1  0.185  0.965  0.970  1.0
  P  P14  1  0.562  0.771  0.174  1.0
  P  P15  1  0.609  0.003  0.990  1.0
  O  O16  1  0.158  0.237  0.189  1.0
  O  O17  1  0.912  0.082  0.372  1.0
  O  O18  1  0.082  0.912  0.872  1.0
  O  O19  1  0.544  0.431  0.666  1.0
  O  O20  1  0.630  0.826  0.060  1.0
  O  O21  1  0.271  0.194  0.983  1.0
  O  O22  1  0.187  0.654  0.547  1.0
  O  O23  1  0.654  0.187  0.047  1.0
  O  O24  1  0.237  0.158  0.689  1.0
  O  O25  1  0.741  0.767  0.229  1.0
  O  O26  1  0.069  0.341  0.870  1.0
  O  O27  1  0.088  0.562  0.212  1.0
  O  O28  1  0.431  0.544  0.166  1.0
  O  O29  1  0.993  0.721  0.397  1.0
  O  O30  1  0.523  0.425  0.407  1.0
  O  O31  1  0.464  0.156  0.541  1.0
  O  O32  1  0.425  0.523  0.907  1.0
  O  O33  1  0.889  0.440  0.713  1.0
  O  O34  1  0.562  0.088  0.712  1.0
  O  O35  1  0.080  0.876  0.065  1.0
  O  O36  1  0.383  0.912  0.960  1.0
  O  O37  1  0.826  0.630  0.560  1.0
  O  O38  1  0.721  0.993  0.897  1.0
  O  O39  1  0.194  0.271  0.483  1.0
  O  O40  1  0.156  0.464  0.041  1.0
  O  O41  1  0.912  0.383  0.460  1.0
  O  O42  1  0.876  0.080  0.565  1.0
  O  O43  1  0.341  0.069  0.370  1.0
  O  O44  1  0.440  0.889  0.213  1.0
  O  O45  1  0.767  0.741  0.729  1.0
[/CIF]
.
The structure described by K2Nd(PO3)5 crystallizes in the monoclinic Cc space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one O(11), one O(12), one O(13), one O(14), one O(2), one O(4), one O(6), one O(7), and one O(8) atom. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(11), one O(13), one O(15), one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. Nd(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(2), one O(7), one O(8), and one O(9) atom. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(15), one O(4), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(11), one O(12), one O(5), and one O(8) atom to form corner-sharing PO4 tetrahedra. In the third P site, P(3) is bonded to one O(13), one O(3), one O(4), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the fourth P site, P(4) is bonded to one O(14), one O(15), one O(2), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the fifth P site, P(5) is bonded to one O(1), one O(12), one O(3), and one O(9) atom to form corner-sharing PO4 tetrahedra. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Nd(1) and one P(5) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Nd(1), and one P(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(2), one P(3), and one P(5) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(1), and one P(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(2) and one P(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Nd(1), and one P(3) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one K(1), one K(2), one Nd(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one K(2), one Nd(1), and one P(5) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Nd(1) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one K(1), one P(2), and one P(5) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one K(1), one K(2), one Nd(1), and one P(3) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one K(1), one Nd(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one K(2), one P(1), and one P(4) atom. is represented by the CIF file [CIF]
data_K2Nd(PO3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.257
_cell_length_b   7.257
_cell_length_c   13.410
_cell_angle_alpha   89.596
_cell_angle_beta   89.596
_cell_angle_gamma   108.101
_symmetry_Int_Tables_number   1
_cell_volume   671.245
_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  0.795  0.559  0.943  1.0
  K  K1  1  0.312  0.701  0.746  1.0
  K  K2  1  0.559  0.795  0.443  1.0
  K  K3  1  0.701  0.312  0.246  1.0
  Nd  Nd4  1  0.904  0.096  0.750  1.0
  Nd  Nd5  1  0.096  0.904  0.250  1.0
  P  P6  1  0.003  0.609  0.490  1.0
  P  P7  1  0.236  0.386  0.941  1.0
  P  P8  1  0.771  0.562  0.674  1.0
  P  P9  1  0.965  0.185  0.470  1.0
  P  P10  1  0.386  0.236  0.441  1.0
  P  P11  1  0.445  0.196  0.659  1.0
  P  P12  1  0.196  0.445  0.159  1.0
  P  P13  1  0.185  0.965  0.970  1.0
  P  P14  1  0.562  0.771  0.174  1.0
  P  P15  1  0.609  0.003  0.990  1.0
  O  O16  1  0.158  0.237  0.189  1.0
  O  O17  1  0.912  0.082  0.372  1.0
  O  O18  1  0.082  0.912  0.872  1.0
  O  O19  1  0.544  0.431  0.666  1.0
  O  O20  1  0.630  0.826  0.060  1.0
  O  O21  1  0.271  0.194  0.983  1.0
  O  O22  1  0.187  0.654  0.547  1.0
  O  O23  1  0.654  0.187  0.047  1.0
  O  O24  1  0.237  0.158  0.689  1.0
  O  O25  1  0.741  0.767  0.229  1.0
  O  O26  1  0.069  0.341  0.870  1.0
  O  O27  1  0.088  0.562  0.212  1.0
  O  O28  1  0.431  0.544  0.166  1.0
  O  O29  1  0.993  0.721  0.397  1.0
  O  O30  1  0.523  0.425  0.407  1.0
  O  O31  1  0.464  0.156  0.541  1.0
  O  O32  1  0.425  0.523  0.907  1.0
  O  O33  1  0.889  0.440  0.713  1.0
  O  O34  1  0.562  0.088  0.712  1.0
  O  O35  1  0.080  0.876  0.065  1.0
  O  O36  1  0.383  0.912  0.960  1.0
  O  O37  1  0.826  0.630  0.560  1.0
  O  O38  1  0.721  0.993  0.897  1.0
  O  O39  1  0.194  0.271  0.483  1.0
  O  O40  1  0.156  0.464  0.041  1.0
  O  O41  1  0.912  0.383  0.460  1.0
  O  O42  1  0.876  0.080  0.565  1.0
  O  O43  1  0.341  0.069  0.370  1.0
  O  O44  1  0.440  0.889  0.213  1.0
  O  O45  1  0.767  0.741  0.729  1.0
[/CIF]
.