The material described by Cd2P6O17 crystallizes in the monoclinic P2_1/c space group. Cd(1) is bonded to one O(2), one O(5), one O(7), one O(8), and two equivalent O(1) atoms to form CdO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and  an edgeedge with one Cd(1)O6 octahedra. There are three 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 PO4 tetrahedra that share corners with three equivalent Cd(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 40-60°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Cd(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 30°. In the third P site, P(3) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Cd(1)O6 octahedra and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 12-45°. There are nine inequivalent O sites. In the first O site, O(6) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the second O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(3) atom. In the third O site, O(8) is bonded in a distorted linear geometry to one Cd(1) and one P(3) atom. In the fourth O site, O(9) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cd(1) and one P(1) atom. In the sixth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(1) atom. In the seventh O site, O(3) is bonded in a linear geometry to two equivalent P(1) atoms. In the eighth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the ninth O site, O(5) is bonded in a bent 150 degrees geometry to one Cd(1) and one P(2) atom. is represented by the CIF file [CIF]
data_Cd2P6O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   18.143
_cell_length_b   5.501
_cell_length_c   7.618
_cell_angle_alpha   68.487
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   707.335
_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
  Cd  Cd0  1  0.072  0.095  0.142  1.0
  Cd  Cd1  1  0.572  0.905  0.358  1.0
  Cd  Cd2  1  0.928  0.905  0.858  1.0
  Cd  Cd3  1  0.428  0.095  0.642  1.0
  P  P4  1  0.030  0.493  0.694  1.0
  P  P5  1  0.530  0.507  0.806  1.0
  P  P6  1  0.970  0.507  0.306  1.0
  P  P7  1  0.470  0.493  0.194  1.0
  P  P8  1  0.169  0.734  0.578  1.0
  P  P9  1  0.669  0.266  0.922  1.0
  P  P10  1  0.831  0.266  0.422  1.0
  P  P11  1  0.331  0.734  0.078  1.0
  P  P12  1  0.178  0.712  0.973  1.0
  P  P13  1  0.678  0.288  0.527  1.0
  P  P14  1  0.822  0.288  0.027  1.0
  P  P15  1  0.322  0.712  0.473  1.0
  O  O16  1  0.011  0.235  0.842  1.0
  O  O17  1  0.511  0.765  0.658  1.0
  O  O18  1  0.989  0.765  0.158  1.0
  O  O19  1  0.489  0.235  0.342  1.0
  O  O20  1  0.012  0.739  0.721  1.0
  O  O21  1  0.512  0.261  0.779  1.0
  O  O22  1  0.988  0.261  0.279  1.0
  O  O23  1  0.488  0.739  0.221  1.0
  O  O24  1  0.000  0.500  0.500  1.0
  O  O25  1  0.500  0.500  0.000  1.0
  O  O26  1  0.118  0.487  0.657  1.0
  O  O27  1  0.618  0.513  0.843  1.0
  O  O28  1  0.882  0.513  0.343  1.0
  O  O29  1  0.382  0.487  0.157  1.0
  O  O30  1  0.140  0.949  0.417  1.0
  O  O31  1  0.640  0.051  0.083  1.0
  O  O32  1  0.240  0.601  0.538  1.0
  O  O33  1  0.740  0.399  0.962  1.0
  O  O34  1  0.760  0.399  0.462  1.0
  O  O35  1  0.260  0.601  0.038  1.0
  O  O36  1  0.334  0.942  0.525  1.0
  O  O37  1  0.834  0.058  0.975  1.0
  O  O38  1  0.666  0.058  0.475  1.0
  O  O39  1  0.166  0.942  0.025  1.0
  O  O40  1  0.372  0.487  0.535  1.0
  O  O41  1  0.872  0.513  0.965  1.0
  O  O42  1  0.628  0.513  0.465  1.0
  O  O43  1  0.128  0.487  0.035  1.0
  O  O44  1  0.312  0.820  0.247  1.0
  O  O45  1  0.812  0.180  0.253  1.0
  O  O46  1  0.688  0.180  0.753  1.0
  O  O47  1  0.188  0.820  0.747  1.0
  O  O48  1  0.360  0.949  0.917  1.0
  O  O49  1  0.860  0.051  0.583  1.0
[/CIF]
.
The material described by Cd2P6O17 crystallizes in the monoclinic P2_1/c space group. Cd(1) is bonded to one O(2), one O(5), one O(7), one O(8), and two equivalent O(1) atoms to form CdO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and  an edgeedge with one Cd(1)O6 octahedra. There are three 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 PO4 tetrahedra that share corners with three equivalent Cd(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 40-60°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Cd(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 30°. In the third P site, P(3) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Cd(1)O6 octahedra and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 12-45°. There are nine inequivalent O sites. In the first O site, O(6) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the second O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(3) atom. In the third O site, O(8) is bonded in a distorted linear geometry to one Cd(1) and one P(3) atom. In the fourth O site, O(9) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cd(1) and one P(1) atom. In the sixth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(1) atom. In the seventh O site, O(3) is bonded in a linear geometry to two equivalent P(1) atoms. In the eighth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the ninth O site, O(5) is bonded in a bent 150 degrees geometry to one Cd(1) and one P(2) atom. is represented by the CIF file [CIF]
data_Cd2P6O17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   18.143
_cell_length_b   5.501
_cell_length_c   7.618
_cell_angle_alpha   68.487
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   707.335
_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
  Cd  Cd0  1  0.072  0.095  0.142  1.0
  Cd  Cd1  1  0.572  0.905  0.358  1.0
  Cd  Cd2  1  0.928  0.905  0.858  1.0
  Cd  Cd3  1  0.428  0.095  0.642  1.0
  P  P4  1  0.030  0.493  0.694  1.0
  P  P5  1  0.530  0.507  0.806  1.0
  P  P6  1  0.970  0.507  0.306  1.0
  P  P7  1  0.470  0.493  0.194  1.0
  P  P8  1  0.169  0.734  0.578  1.0
  P  P9  1  0.669  0.266  0.922  1.0
  P  P10  1  0.831  0.266  0.422  1.0
  P  P11  1  0.331  0.734  0.078  1.0
  P  P12  1  0.178  0.712  0.973  1.0
  P  P13  1  0.678  0.288  0.527  1.0
  P  P14  1  0.822  0.288  0.027  1.0
  P  P15  1  0.322  0.712  0.473  1.0
  O  O16  1  0.011  0.235  0.842  1.0
  O  O17  1  0.511  0.765  0.658  1.0
  O  O18  1  0.989  0.765  0.158  1.0
  O  O19  1  0.489  0.235  0.342  1.0
  O  O20  1  0.012  0.739  0.721  1.0
  O  O21  1  0.512  0.261  0.779  1.0
  O  O22  1  0.988  0.261  0.279  1.0
  O  O23  1  0.488  0.739  0.221  1.0
  O  O24  1  0.000  0.500  0.500  1.0
  O  O25  1  0.500  0.500  0.000  1.0
  O  O26  1  0.118  0.487  0.657  1.0
  O  O27  1  0.618  0.513  0.843  1.0
  O  O28  1  0.882  0.513  0.343  1.0
  O  O29  1  0.382  0.487  0.157  1.0
  O  O30  1  0.140  0.949  0.417  1.0
  O  O31  1  0.640  0.051  0.083  1.0
  O  O32  1  0.240  0.601  0.538  1.0
  O  O33  1  0.740  0.399  0.962  1.0
  O  O34  1  0.760  0.399  0.462  1.0
  O  O35  1  0.260  0.601  0.038  1.0
  O  O36  1  0.334  0.942  0.525  1.0
  O  O37  1  0.834  0.058  0.975  1.0
  O  O38  1  0.666  0.058  0.475  1.0
  O  O39  1  0.166  0.942  0.025  1.0
  O  O40  1  0.372  0.487  0.535  1.0
  O  O41  1  0.872  0.513  0.965  1.0
  O  O42  1  0.628  0.513  0.465  1.0
  O  O43  1  0.128  0.487  0.035  1.0
  O  O44  1  0.312  0.820  0.247  1.0
  O  O45  1  0.812  0.180  0.253  1.0
  O  O46  1  0.688  0.180  0.753  1.0
  O  O47  1  0.188  0.820  0.747  1.0
  O  O48  1  0.360  0.949  0.917  1.0
  O  O49  1  0.860  0.051  0.583  1.0
[/CIF]
.