The material structure described by PbCoP2O7 crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(6) atom to form distorted CoO5 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 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(7) 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 PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with three equivalent Co(1)O5 trigonal bipyramids. In the second P site, P(2) 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(1)O4 tetrahedra and corners with two equivalent Co(1)O5 trigonal bipyramids. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Co(1), one Pb(1), and one P(2) atom. In the second O site, O(6) is bonded in a 2-coordinate geometry to one Co(1), one Pb(1), and one P(2) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one P(2) atom. In the fourth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(1), one Pb(1), and one P(1) atom. In the fifth O site, O(2) is bonded in a 1-coordinate geometry to one Co(1), one Pb(1), and one P(1) atom. In the sixth O site, O(3) is bonded in a 2-coordinate geometry to one Co(1), one Pb(1), and one P(1) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. is represented by the CIF card [CIF]
data_CoP2PbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.213
_cell_length_b   5.321
_cell_length_c   13.679
_cell_angle_alpha   67.171
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   550.996
_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
  Co  Co0  1  0.645  0.909  0.885  1.0
  Co  Co1  1  0.145  0.091  0.615  1.0
  Co  Co2  1  0.355  0.091  0.115  1.0
  Co  Co3  1  0.855  0.909  0.385  1.0
  P  P4  1  0.694  0.302  0.013  1.0
  P  P5  1  0.194  0.698  0.487  1.0
  P  P6  1  0.306  0.698  0.987  1.0
  P  P7  1  0.806  0.302  0.513  1.0
  P  P8  1  0.962  0.082  0.159  1.0
  P  P9  1  0.462  0.918  0.341  1.0
  P  P10  1  0.038  0.918  0.841  1.0
  P  P11  1  0.538  0.082  0.659  1.0
  Pb  Pb12  1  0.836  0.567  0.718  1.0
  Pb  Pb13  1  0.336  0.433  0.782  1.0
  Pb  Pb14  1  0.164  0.433  0.282  1.0
  Pb  Pb15  1  0.664  0.567  0.218  1.0
  O  O16  1  0.663  0.581  0.017  1.0
  O  O17  1  0.163  0.419  0.483  1.0
  O  O18  1  0.337  0.419  0.983  1.0
  O  O19  1  0.837  0.581  0.517  1.0
  O  O20  1  0.677  0.295  0.904  1.0
  O  O21  1  0.177  0.705  0.596  1.0
  O  O22  1  0.323  0.705  0.096  1.0
  O  O23  1  0.823  0.295  0.404  1.0
  O  O24  1  0.594  0.082  0.098  1.0
  O  O25  1  0.094  0.918  0.402  1.0
  O  O26  1  0.406  0.918  0.902  1.0
  O  O27  1  0.906  0.082  0.598  1.0
  O  O28  1  0.882  0.231  0.045  1.0
  O  O29  1  0.382  0.769  0.455  1.0
  O  O30  1  0.118  0.769  0.955  1.0
  O  O31  1  0.618  0.231  0.545  1.0
  O  O32  1  0.138  0.172  0.149  1.0
  O  O33  1  0.638  0.828  0.351  1.0
  O  O34  1  0.862  0.828  0.851  1.0
  O  O35  1  0.362  0.172  0.649  1.0
  O  O36  1  0.876  0.186  0.235  1.0
  O  O37  1  0.376  0.814  0.265  1.0
  O  O38  1  0.124  0.814  0.765  1.0
  O  O39  1  0.624  0.186  0.735  1.0
  O  O40  1  0.939  0.779  0.191  1.0
  O  O41  1  0.439  0.221  0.309  1.0
  O  O42  1  0.061  0.221  0.809  1.0
  O  O43  1  0.561  0.779  0.691  1.0
[/CIF]
.
The material structure described by PbCoP2O7 crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(6) atom to form distorted CoO5 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 7-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(7) 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 PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with three equivalent Co(1)O5 trigonal bipyramids. In the second P site, P(2) 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(1)O4 tetrahedra and corners with two equivalent Co(1)O5 trigonal bipyramids. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Co(1), one Pb(1), and one P(2) atom. In the second O site, O(6) is bonded in a 2-coordinate geometry to one Co(1), one Pb(1), and one P(2) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one P(2) atom. In the fourth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Co(1), one Pb(1), and one P(1) atom. In the fifth O site, O(2) is bonded in a 1-coordinate geometry to one Co(1), one Pb(1), and one P(1) atom. In the sixth O site, O(3) is bonded in a 2-coordinate geometry to one Co(1), one Pb(1), and one P(1) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. is represented by the CIF card [CIF]
data_CoP2PbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.213
_cell_length_b   5.321
_cell_length_c   13.679
_cell_angle_alpha   67.171
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   550.996
_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
  Co  Co0  1  0.645  0.909  0.885  1.0
  Co  Co1  1  0.145  0.091  0.615  1.0
  Co  Co2  1  0.355  0.091  0.115  1.0
  Co  Co3  1  0.855  0.909  0.385  1.0
  P  P4  1  0.694  0.302  0.013  1.0
  P  P5  1  0.194  0.698  0.487  1.0
  P  P6  1  0.306  0.698  0.987  1.0
  P  P7  1  0.806  0.302  0.513  1.0
  P  P8  1  0.962  0.082  0.159  1.0
  P  P9  1  0.462  0.918  0.341  1.0
  P  P10  1  0.038  0.918  0.841  1.0
  P  P11  1  0.538  0.082  0.659  1.0
  Pb  Pb12  1  0.836  0.567  0.718  1.0
  Pb  Pb13  1  0.336  0.433  0.782  1.0
  Pb  Pb14  1  0.164  0.433  0.282  1.0
  Pb  Pb15  1  0.664  0.567  0.218  1.0
  O  O16  1  0.663  0.581  0.017  1.0
  O  O17  1  0.163  0.419  0.483  1.0
  O  O18  1  0.337  0.419  0.983  1.0
  O  O19  1  0.837  0.581  0.517  1.0
  O  O20  1  0.677  0.295  0.904  1.0
  O  O21  1  0.177  0.705  0.596  1.0
  O  O22  1  0.323  0.705  0.096  1.0
  O  O23  1  0.823  0.295  0.404  1.0
  O  O24  1  0.594  0.082  0.098  1.0
  O  O25  1  0.094  0.918  0.402  1.0
  O  O26  1  0.406  0.918  0.902  1.0
  O  O27  1  0.906  0.082  0.598  1.0
  O  O28  1  0.882  0.231  0.045  1.0
  O  O29  1  0.382  0.769  0.455  1.0
  O  O30  1  0.118  0.769  0.955  1.0
  O  O31  1  0.618  0.231  0.545  1.0
  O  O32  1  0.138  0.172  0.149  1.0
  O  O33  1  0.638  0.828  0.351  1.0
  O  O34  1  0.862  0.828  0.851  1.0
  O  O35  1  0.362  0.172  0.649  1.0
  O  O36  1  0.876  0.186  0.235  1.0
  O  O37  1  0.376  0.814  0.265  1.0
  O  O38  1  0.124  0.814  0.765  1.0
  O  O39  1  0.624  0.186  0.735  1.0
  O  O40  1  0.939  0.779  0.191  1.0
  O  O41  1  0.439  0.221  0.309  1.0
  O  O42  1  0.061  0.221  0.809  1.0
  O  O43  1  0.561  0.779  0.691  1.0
[/CIF]
.