The crystal structure described by Cs2CdP2O7 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. In the second Cs site, Cs(2) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent O(2), and three equivalent O(5) atoms. Cd(1) is bonded to one O(3), two equivalent O(2), and two equivalent O(4) atoms to form distorted CdO5 trigonal bipyramids that share corners with two equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(5), and two equivalent O(4) atoms to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with two equivalent Cd(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with three equivalent Cd(1)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Cs(1), one Cd(1), and one P(2) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Cs(1), one Cd(1), and one P(1) atom. In the third O site, O(5) is bonded in a distorted single-bond geometry to three equivalent Cs(2) and one P(1) atom. In the fourth O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(2), one P(1), and one P(2) atom. In the fifth O site, O(2) is bonded in a 2-coordinate geometry to one Cs(1), one Cs(2), one Cd(1), and one P(2) atom. is represented by the CIF file [CIF]
data_Cs2CdP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.572
_cell_length_b   10.245
_cell_length_c   16.909
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   965.276
_cell_formula_units_Z   4
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
  Cs  Cs0  1  0.250  0.352  0.922  1.0
  Cs  Cs1  1  0.250  0.148  0.422  1.0
  Cs  Cs2  1  0.750  0.648  0.078  1.0
  Cs  Cs3  1  0.750  0.852  0.578  1.0
  Cs  Cs4  1  0.250  0.476  0.610  1.0
  Cs  Cs5  1  0.250  0.024  0.110  1.0
  Cs  Cs6  1  0.750  0.524  0.390  1.0
  Cs  Cs7  1  0.750  0.976  0.890  1.0
  Cd  Cd8  1  0.250  0.112  0.689  1.0
  Cd  Cd9  1  0.250  0.388  0.189  1.0
  Cd  Cd10  1  0.750  0.888  0.311  1.0
  Cd  Cd11  1  0.750  0.612  0.811  1.0
  P  P12  1  0.750  0.234  0.589  1.0
  P  P13  1  0.750  0.266  0.089  1.0
  P  P14  1  0.250  0.766  0.411  1.0
  P  P15  1  0.250  0.734  0.911  1.0
  P  P16  1  0.750  0.272  0.763  1.0
  P  P17  1  0.750  0.228  0.263  1.0
  P  P18  1  0.250  0.728  0.237  1.0
  P  P19  1  0.250  0.772  0.737  1.0
  O  O20  1  0.750  0.324  0.671  1.0
  O  O21  1  0.750  0.176  0.171  1.0
  O  O22  1  0.250  0.676  0.329  1.0
  O  O23  1  0.250  0.824  0.829  1.0
  O  O24  1  0.522  0.191  0.777  1.0
  O  O25  1  0.978  0.309  0.277  1.0
  O  O26  1  0.022  0.809  0.223  1.0
  O  O27  1  0.478  0.691  0.723  1.0
  O  O28  1  0.478  0.809  0.223  1.0
  O  O29  1  0.022  0.691  0.723  1.0
  O  O30  1  0.978  0.191  0.777  1.0
  O  O31  1  0.522  0.309  0.277  1.0
  O  O32  1  0.750  0.397  0.812  1.0
  O  O33  1  0.750  0.103  0.312  1.0
  O  O34  1  0.250  0.603  0.188  1.0
  O  O35  1  0.250  0.897  0.688  1.0
  O  O36  1  0.521  0.150  0.592  1.0
  O  O37  1  0.979  0.350  0.092  1.0
  O  O38  1  0.021  0.850  0.408  1.0
  O  O39  1  0.479  0.650  0.908  1.0
  O  O40  1  0.479  0.850  0.408  1.0
  O  O41  1  0.021  0.650  0.908  1.0
  O  O42  1  0.979  0.150  0.592  1.0
  O  O43  1  0.521  0.350  0.092  1.0
  O  O44  1  0.750  0.336  0.523  1.0
  O  O45  1  0.750  0.164  0.023  1.0
  O  O46  1  0.250  0.664  0.477  1.0
  O  O47  1  0.250  0.836  0.977  1.0
[/CIF]
.
The crystal structure described by Cs2CdP2O7 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. In the second Cs site, Cs(2) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent O(2), and three equivalent O(5) atoms. Cd(1) is bonded to one O(3), two equivalent O(2), and two equivalent O(4) atoms to form distorted CdO5 trigonal bipyramids that share corners with two equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(5), and two equivalent O(4) atoms to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with two equivalent Cd(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with three equivalent Cd(1)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Cs(1), one Cd(1), and one P(2) atom. In the second O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Cs(1), one Cd(1), and one P(1) atom. In the third O site, O(5) is bonded in a distorted single-bond geometry to three equivalent Cs(2) and one P(1) atom. In the fourth O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(2), one P(1), and one P(2) atom. In the fifth O site, O(2) is bonded in a 2-coordinate geometry to one Cs(1), one Cs(2), one Cd(1), and one P(2) atom. is represented by the CIF file [CIF]
data_Cs2CdP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.572
_cell_length_b   10.245
_cell_length_c   16.909
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   965.276
_cell_formula_units_Z   4
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
  Cs  Cs0  1  0.250  0.352  0.922  1.0
  Cs  Cs1  1  0.250  0.148  0.422  1.0
  Cs  Cs2  1  0.750  0.648  0.078  1.0
  Cs  Cs3  1  0.750  0.852  0.578  1.0
  Cs  Cs4  1  0.250  0.476  0.610  1.0
  Cs  Cs5  1  0.250  0.024  0.110  1.0
  Cs  Cs6  1  0.750  0.524  0.390  1.0
  Cs  Cs7  1  0.750  0.976  0.890  1.0
  Cd  Cd8  1  0.250  0.112  0.689  1.0
  Cd  Cd9  1  0.250  0.388  0.189  1.0
  Cd  Cd10  1  0.750  0.888  0.311  1.0
  Cd  Cd11  1  0.750  0.612  0.811  1.0
  P  P12  1  0.750  0.234  0.589  1.0
  P  P13  1  0.750  0.266  0.089  1.0
  P  P14  1  0.250  0.766  0.411  1.0
  P  P15  1  0.250  0.734  0.911  1.0
  P  P16  1  0.750  0.272  0.763  1.0
  P  P17  1  0.750  0.228  0.263  1.0
  P  P18  1  0.250  0.728  0.237  1.0
  P  P19  1  0.250  0.772  0.737  1.0
  O  O20  1  0.750  0.324  0.671  1.0
  O  O21  1  0.750  0.176  0.171  1.0
  O  O22  1  0.250  0.676  0.329  1.0
  O  O23  1  0.250  0.824  0.829  1.0
  O  O24  1  0.522  0.191  0.777  1.0
  O  O25  1  0.978  0.309  0.277  1.0
  O  O26  1  0.022  0.809  0.223  1.0
  O  O27  1  0.478  0.691  0.723  1.0
  O  O28  1  0.478  0.809  0.223  1.0
  O  O29  1  0.022  0.691  0.723  1.0
  O  O30  1  0.978  0.191  0.777  1.0
  O  O31  1  0.522  0.309  0.277  1.0
  O  O32  1  0.750  0.397  0.812  1.0
  O  O33  1  0.750  0.103  0.312  1.0
  O  O34  1  0.250  0.603  0.188  1.0
  O  O35  1  0.250  0.897  0.688  1.0
  O  O36  1  0.521  0.150  0.592  1.0
  O  O37  1  0.979  0.350  0.092  1.0
  O  O38  1  0.021  0.850  0.408  1.0
  O  O39  1  0.479  0.650  0.908  1.0
  O  O40  1  0.479  0.850  0.408  1.0
  O  O41  1  0.021  0.650  0.908  1.0
  O  O42  1  0.979  0.150  0.592  1.0
  O  O43  1  0.521  0.350  0.092  1.0
  O  O44  1  0.750  0.336  0.523  1.0
  O  O45  1  0.750  0.164  0.023  1.0
  O  O46  1  0.250  0.664  0.477  1.0
  O  O47  1  0.250  0.836  0.977  1.0
[/CIF]
.