The compound described by ZnPbP2O7 crystallizes in the monoclinic P2_1/c space group. Zn(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(7) atom to form ZnO5 trigonal bipyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with three equivalent P(1)O4 tetrahedra. Pb(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with three equivalent Zn(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with two equivalent Zn(1)O5 trigonal bipyramids. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the second O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the third O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one P(2) atom. In the fifth O site, O(2) is bonded in a 3-coordinate geometry to one Zn(1), one Pb(1), and one P(2) atom. In the sixth O site, O(3) is bonded in a 2-coordinate geometry to one Zn(1), one Pb(1), and one P(2) atom. In the seventh O site, O(4) is bonded in a 2-coordinate geometry to one Zn(1), one Pb(1), and one P(1) atom. is represented by the CIF card [CIF]
data_ZnP2PbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.417
_cell_length_b   5.409
_cell_length_c   14.129
_cell_angle_alpha   67.864
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   595.781
_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
  Zn  Zn0  1  0.348  0.276  0.396  1.0
  Zn  Zn1  1  0.652  0.724  0.604  1.0
  Zn  Zn2  1  0.152  0.276  0.896  1.0
  Zn  Zn3  1  0.848  0.724  0.104  1.0
  P  P4  1  0.800  0.338  0.980  1.0
  P  P5  1  0.700  0.338  0.480  1.0
  P  P6  1  0.200  0.662  0.020  1.0
  P  P7  1  0.300  0.662  0.520  1.0
  P  P8  1  0.536  0.419  0.833  1.0
  P  P9  1  0.964  0.419  0.333  1.0
  P  P10  1  0.464  0.581  0.167  1.0
  P  P11  1  0.036  0.581  0.667  1.0
  Pb  Pb12  1  0.327  0.981  0.723  1.0
  Pb  Pb13  1  0.827  0.019  0.777  1.0
  Pb  Pb14  1  0.673  0.019  0.277  1.0
  Pb  Pb15  1  0.173  0.981  0.223  1.0
  O  O16  1  0.559  0.185  0.799  1.0
  O  O17  1  0.059  0.815  0.701  1.0
  O  O18  1  0.441  0.815  0.201  1.0
  O  O19  1  0.941  0.185  0.299  1.0
  O  O20  1  0.362  0.481  0.846  1.0
  O  O21  1  0.862  0.519  0.654  1.0
  O  O22  1  0.638  0.519  0.154  1.0
  O  O23  1  0.138  0.481  0.346  1.0
  O  O24  1  0.619  0.676  0.761  1.0
  O  O25  1  0.119  0.324  0.739  1.0
  O  O26  1  0.381  0.324  0.239  1.0
  O  O27  1  0.881  0.676  0.261  1.0
  O  O28  1  0.903  0.279  0.900  1.0
  O  O29  1  0.403  0.721  0.600  1.0
  O  O30  1  0.097  0.721  0.100  1.0
  O  O31  1  0.597  0.279  0.400  1.0
  O  O32  1  0.693  0.110  0.586  1.0
  O  O33  1  0.193  0.890  0.914  1.0
  O  O34  1  0.307  0.890  0.414  1.0
  O  O35  1  0.807  0.110  0.086  1.0
  O  O36  1  0.884  0.335  0.445  1.0
  O  O37  1  0.384  0.665  0.055  1.0
  O  O38  1  0.116  0.665  0.555  1.0
  O  O39  1  0.616  0.335  0.945  1.0
  O  O40  1  0.668  0.617  0.480  1.0
  O  O41  1  0.168  0.383  0.020  1.0
  O  O42  1  0.332  0.383  0.520  1.0
  O  O43  1  0.832  0.617  0.980  1.0
[/CIF]
.
The compound described by ZnPbP2O7 crystallizes in the monoclinic P2_1/c space group. Zn(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(7) atom to form ZnO5 trigonal bipyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with three equivalent P(1)O4 tetrahedra. Pb(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with three equivalent Zn(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with two equivalent Zn(1)O5 trigonal bipyramids. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the second O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the third O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one P(2) atom. In the fifth O site, O(2) is bonded in a 3-coordinate geometry to one Zn(1), one Pb(1), and one P(2) atom. In the sixth O site, O(3) is bonded in a 2-coordinate geometry to one Zn(1), one Pb(1), and one P(2) atom. In the seventh O site, O(4) is bonded in a 2-coordinate geometry to one Zn(1), one Pb(1), and one P(1) atom. is represented by the CIF card [CIF]
data_ZnP2PbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.417
_cell_length_b   5.409
_cell_length_c   14.129
_cell_angle_alpha   67.864
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   595.781
_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
  Zn  Zn0  1  0.348  0.276  0.396  1.0
  Zn  Zn1  1  0.652  0.724  0.604  1.0
  Zn  Zn2  1  0.152  0.276  0.896  1.0
  Zn  Zn3  1  0.848  0.724  0.104  1.0
  P  P4  1  0.800  0.338  0.980  1.0
  P  P5  1  0.700  0.338  0.480  1.0
  P  P6  1  0.200  0.662  0.020  1.0
  P  P7  1  0.300  0.662  0.520  1.0
  P  P8  1  0.536  0.419  0.833  1.0
  P  P9  1  0.964  0.419  0.333  1.0
  P  P10  1  0.464  0.581  0.167  1.0
  P  P11  1  0.036  0.581  0.667  1.0
  Pb  Pb12  1  0.327  0.981  0.723  1.0
  Pb  Pb13  1  0.827  0.019  0.777  1.0
  Pb  Pb14  1  0.673  0.019  0.277  1.0
  Pb  Pb15  1  0.173  0.981  0.223  1.0
  O  O16  1  0.559  0.185  0.799  1.0
  O  O17  1  0.059  0.815  0.701  1.0
  O  O18  1  0.441  0.815  0.201  1.0
  O  O19  1  0.941  0.185  0.299  1.0
  O  O20  1  0.362  0.481  0.846  1.0
  O  O21  1  0.862  0.519  0.654  1.0
  O  O22  1  0.638  0.519  0.154  1.0
  O  O23  1  0.138  0.481  0.346  1.0
  O  O24  1  0.619  0.676  0.761  1.0
  O  O25  1  0.119  0.324  0.739  1.0
  O  O26  1  0.381  0.324  0.239  1.0
  O  O27  1  0.881  0.676  0.261  1.0
  O  O28  1  0.903  0.279  0.900  1.0
  O  O29  1  0.403  0.721  0.600  1.0
  O  O30  1  0.097  0.721  0.100  1.0
  O  O31  1  0.597  0.279  0.400  1.0
  O  O32  1  0.693  0.110  0.586  1.0
  O  O33  1  0.193  0.890  0.914  1.0
  O  O34  1  0.307  0.890  0.414  1.0
  O  O35  1  0.807  0.110  0.086  1.0
  O  O36  1  0.884  0.335  0.445  1.0
  O  O37  1  0.384  0.665  0.055  1.0
  O  O38  1  0.116  0.665  0.555  1.0
  O  O39  1  0.616  0.335  0.945  1.0
  O  O40  1  0.668  0.617  0.480  1.0
  O  O41  1  0.168  0.383  0.020  1.0
  O  O42  1  0.332  0.383  0.520  1.0
  O  O43  1  0.832  0.617  0.980  1.0
[/CIF]
.