The structure described by Co3Zn(P2O7)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Zn(1)O6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with four equivalent P(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted ZnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with four equivalent P(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Zn(1)O6 octahedra, corners with three equivalent Co(1)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-76°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Co(1)O6 octahedra, and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 40-61°. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(2) atom. In the third O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one P(2) atom. In the fourth O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(2), one Zn(1), and one P(2) atom. In the fifth O site, O(2) is bonded to one Co(1), one Co(2), one Zn(1), and one P(1) atom to form distorted corner-sharing OZnCo2P tetrahedra. In the sixth O site, O(3) is bonded in a 3-coordinate geometry to one Co(1), one Zn(1), and one P(1) atom. In the seventh O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. is represented by the CIF file [CIF]
data_ZnCo3(P2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.575
_cell_length_b   7.233
_cell_length_c   9.570
_cell_angle_alpha   68.569
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.127
_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
  Zn  Zn0  1  0.000  0.500  0.000  1.0
  Zn  Zn1  1  0.500  0.500  0.500  1.0
  Co  Co2  1  0.132  0.814  0.519  1.0
  Co  Co3  1  0.632  0.186  0.981  1.0
  Co  Co4  1  0.868  0.186  0.481  1.0
  Co  Co5  1  0.368  0.814  0.019  1.0
  Co  Co6  1  0.000  0.000  0.000  1.0
  Co  Co7  1  0.500  0.000  0.500  1.0
  P  P8  1  0.928  0.417  0.705  1.0
  P  P9  1  0.428  0.583  0.795  1.0
  P  P10  1  0.072  0.583  0.295  1.0
  P  P11  1  0.572  0.417  0.205  1.0
  P  P12  1  0.208  0.135  0.688  1.0
  P  P13  1  0.708  0.865  0.812  1.0
  P  P14  1  0.792  0.865  0.312  1.0
  P  P15  1  0.292  0.135  0.188  1.0
  O  O16  1  0.384  0.196  0.602  1.0
  O  O17  1  0.884  0.804  0.898  1.0
  O  O18  1  0.616  0.804  0.398  1.0
  O  O19  1  0.116  0.196  0.102  1.0
  O  O20  1  0.387  0.703  0.625  1.0
  O  O21  1  0.887  0.297  0.875  1.0
  O  O22  1  0.613  0.297  0.375  1.0
  O  O23  1  0.113  0.703  0.125  1.0
  O  O24  1  0.793  0.376  0.600  1.0
  O  O25  1  0.293  0.624  0.900  1.0
  O  O26  1  0.207  0.624  0.400  1.0
  O  O27  1  0.707  0.376  0.100  1.0
  O  O28  1  0.117  0.340  0.672  1.0
  O  O29  1  0.617  0.660  0.828  1.0
  O  O30  1  0.883  0.660  0.328  1.0
  O  O31  1  0.383  0.340  0.172  1.0
  O  O32  1  0.531  0.631  0.182  1.0
  O  O33  1  0.031  0.369  0.318  1.0
  O  O34  1  0.469  0.369  0.818  1.0
  O  O35  1  0.969  0.631  0.682  1.0
  O  O36  1  0.786  0.980  0.141  1.0
  O  O37  1  0.286  0.020  0.359  1.0
  O  O38  1  0.214  0.020  0.859  1.0
  O  O39  1  0.714  0.980  0.641  1.0
  O  O40  1  0.413  0.032  0.110  1.0
  O  O41  1  0.913  0.968  0.390  1.0
  O  O42  1  0.587  0.968  0.890  1.0
  O  O43  1  0.087  0.032  0.610  1.0
[/CIF]
.
The structure described by Co3Zn(P2O7)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(7) atoms to form CoO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra,  an edgeedge with one Co(2)O6 octahedra, and  an edgeedge with one Zn(1)O6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with four equivalent P(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. Zn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted ZnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with four equivalent P(1)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Zn(1)O6 octahedra, corners with three equivalent Co(1)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-76°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Co(1)O6 octahedra, and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 40-61°. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one P(2) atom. In the third O site, O(7) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one P(2) atom. In the fourth O site, O(1) is bonded in a distorted trigonal planar geometry to one Co(2), one Zn(1), and one P(2) atom. In the fifth O site, O(2) is bonded to one Co(1), one Co(2), one Zn(1), and one P(1) atom to form distorted corner-sharing OZnCo2P tetrahedra. In the sixth O site, O(3) is bonded in a 3-coordinate geometry to one Co(1), one Zn(1), and one P(1) atom. In the seventh O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. is represented by the CIF file [CIF]
data_ZnCo3(P2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.575
_cell_length_b   7.233
_cell_length_c   9.570
_cell_angle_alpha   68.569
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.127
_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
  Zn  Zn0  1  0.000  0.500  0.000  1.0
  Zn  Zn1  1  0.500  0.500  0.500  1.0
  Co  Co2  1  0.132  0.814  0.519  1.0
  Co  Co3  1  0.632  0.186  0.981  1.0
  Co  Co4  1  0.868  0.186  0.481  1.0
  Co  Co5  1  0.368  0.814  0.019  1.0
  Co  Co6  1  0.000  0.000  0.000  1.0
  Co  Co7  1  0.500  0.000  0.500  1.0
  P  P8  1  0.928  0.417  0.705  1.0
  P  P9  1  0.428  0.583  0.795  1.0
  P  P10  1  0.072  0.583  0.295  1.0
  P  P11  1  0.572  0.417  0.205  1.0
  P  P12  1  0.208  0.135  0.688  1.0
  P  P13  1  0.708  0.865  0.812  1.0
  P  P14  1  0.792  0.865  0.312  1.0
  P  P15  1  0.292  0.135  0.188  1.0
  O  O16  1  0.384  0.196  0.602  1.0
  O  O17  1  0.884  0.804  0.898  1.0
  O  O18  1  0.616  0.804  0.398  1.0
  O  O19  1  0.116  0.196  0.102  1.0
  O  O20  1  0.387  0.703  0.625  1.0
  O  O21  1  0.887  0.297  0.875  1.0
  O  O22  1  0.613  0.297  0.375  1.0
  O  O23  1  0.113  0.703  0.125  1.0
  O  O24  1  0.793  0.376  0.600  1.0
  O  O25  1  0.293  0.624  0.900  1.0
  O  O26  1  0.207  0.624  0.400  1.0
  O  O27  1  0.707  0.376  0.100  1.0
  O  O28  1  0.117  0.340  0.672  1.0
  O  O29  1  0.617  0.660  0.828  1.0
  O  O30  1  0.883  0.660  0.328  1.0
  O  O31  1  0.383  0.340  0.172  1.0
  O  O32  1  0.531  0.631  0.182  1.0
  O  O33  1  0.031  0.369  0.318  1.0
  O  O34  1  0.469  0.369  0.818  1.0
  O  O35  1  0.969  0.631  0.682  1.0
  O  O36  1  0.786  0.980  0.141  1.0
  O  O37  1  0.286  0.020  0.359  1.0
  O  O38  1  0.214  0.020  0.859  1.0
  O  O39  1  0.714  0.980  0.641  1.0
  O  O40  1  0.413  0.032  0.110  1.0
  O  O41  1  0.913  0.968  0.390  1.0
  O  O42  1  0.587  0.968  0.890  1.0
  O  O43  1  0.087  0.032  0.610  1.0
[/CIF]
.