The material structure described by CoP2O7 crystallizes in the monoclinic C2/c space group. Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with three 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(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share 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 43-52°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form PO4 tetrahedra that share 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 42-51°. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(1) atom. In the second O site, O(7) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(2) atom. In the fifth O site, O(3) is bonded in a bent 120 degrees geometry to one Co(1) and one P(2) atom. In the sixth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the seventh O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(2) atom. is represented by the CIF file [CIF]
data_CoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.147
_cell_length_b   6.147
_cell_length_c   12.929
_cell_angle_alpha   75.273
_cell_angle_beta   75.273
_cell_angle_gamma   80.947
_symmetry_Int_Tables_number   1
_cell_volume   454.744
_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  0.414  0.878  0.856  1.0
  Co  Co1  1  0.122  0.586  0.644  1.0
  Co  Co2  1  0.878  0.414  0.356  1.0
  Co  Co3  1  0.586  0.122  0.144  1.0
  P  P4  1  0.079  0.249  0.138  1.0
  P  P5  1  0.249  0.079  0.638  1.0
  P  P6  1  0.414  0.332  0.931  1.0
  P  P7  1  0.332  0.414  0.431  1.0
  P  P8  1  0.668  0.586  0.569  1.0
  P  P9  1  0.921  0.751  0.862  1.0
  P  P10  1  0.751  0.921  0.362  1.0
  P  P11  1  0.586  0.668  0.069  1.0
  O  O12  1  0.806  0.606  0.981  1.0
  O  O13  1  0.355  0.189  0.862  1.0
  O  O14  1  0.189  0.355  0.362  1.0
  O  O15  1  0.600  0.205  0.993  1.0
  O  O16  1  0.569  0.034  0.297  1.0
  O  O17  1  0.441  0.521  0.646  1.0
  O  O18  1  0.034  0.569  0.797  1.0
  O  O19  1  0.521  0.441  0.146  1.0
  O  O20  1  0.811  0.645  0.638  1.0
  O  O21  1  0.114  0.909  0.619  1.0
  O  O22  1  0.729  0.916  0.821  1.0
  O  O23  1  0.091  0.886  0.881  1.0
  O  O24  1  0.886  0.091  0.381  1.0
  O  O25  1  0.559  0.479  0.354  1.0
  O  O26  1  0.966  0.431  0.203  1.0
  O  O27  1  0.916  0.729  0.321  1.0
  O  O28  1  0.795  0.400  0.507  1.0
  O  O29  1  0.645  0.811  0.138  1.0
  O  O30  1  0.394  0.194  0.519  1.0
  O  O31  1  0.194  0.394  0.019  1.0
  O  O32  1  0.479  0.559  0.854  1.0
  O  O33  1  0.909  0.114  0.119  1.0
  O  O34  1  0.205  0.600  0.493  1.0
  O  O35  1  0.084  0.271  0.679  1.0
  O  O36  1  0.271  0.084  0.179  1.0
  O  O37  1  0.400  0.795  0.007  1.0
  O  O38  1  0.431  0.966  0.703  1.0
  O  O39  1  0.606  0.806  0.481  1.0
[/CIF]
.
The material structure described by CoP2O7 crystallizes in the monoclinic C2/c space group. Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with three 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(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share 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 43-52°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form PO4 tetrahedra that share 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 42-51°. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(1) atom. In the second O site, O(7) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(2) atom. In the fifth O site, O(3) is bonded in a bent 120 degrees geometry to one Co(1) and one P(2) atom. In the sixth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the seventh O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(2) atom. is represented by the CIF file [CIF]
data_CoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.147
_cell_length_b   6.147
_cell_length_c   12.929
_cell_angle_alpha   75.273
_cell_angle_beta   75.273
_cell_angle_gamma   80.947
_symmetry_Int_Tables_number   1
_cell_volume   454.744
_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  0.414  0.878  0.856  1.0
  Co  Co1  1  0.122  0.586  0.644  1.0
  Co  Co2  1  0.878  0.414  0.356  1.0
  Co  Co3  1  0.586  0.122  0.144  1.0
  P  P4  1  0.079  0.249  0.138  1.0
  P  P5  1  0.249  0.079  0.638  1.0
  P  P6  1  0.414  0.332  0.931  1.0
  P  P7  1  0.332  0.414  0.431  1.0
  P  P8  1  0.668  0.586  0.569  1.0
  P  P9  1  0.921  0.751  0.862  1.0
  P  P10  1  0.751  0.921  0.362  1.0
  P  P11  1  0.586  0.668  0.069  1.0
  O  O12  1  0.806  0.606  0.981  1.0
  O  O13  1  0.355  0.189  0.862  1.0
  O  O14  1  0.189  0.355  0.362  1.0
  O  O15  1  0.600  0.205  0.993  1.0
  O  O16  1  0.569  0.034  0.297  1.0
  O  O17  1  0.441  0.521  0.646  1.0
  O  O18  1  0.034  0.569  0.797  1.0
  O  O19  1  0.521  0.441  0.146  1.0
  O  O20  1  0.811  0.645  0.638  1.0
  O  O21  1  0.114  0.909  0.619  1.0
  O  O22  1  0.729  0.916  0.821  1.0
  O  O23  1  0.091  0.886  0.881  1.0
  O  O24  1  0.886  0.091  0.381  1.0
  O  O25  1  0.559  0.479  0.354  1.0
  O  O26  1  0.966  0.431  0.203  1.0
  O  O27  1  0.916  0.729  0.321  1.0
  O  O28  1  0.795  0.400  0.507  1.0
  O  O29  1  0.645  0.811  0.138  1.0
  O  O30  1  0.394  0.194  0.519  1.0
  O  O31  1  0.194  0.394  0.019  1.0
  O  O32  1  0.479  0.559  0.854  1.0
  O  O33  1  0.909  0.114  0.119  1.0
  O  O34  1  0.205  0.600  0.493  1.0
  O  O35  1  0.084  0.271  0.679  1.0
  O  O36  1  0.271  0.084  0.179  1.0
  O  O37  1  0.400  0.795  0.007  1.0
  O  O38  1  0.431  0.966  0.703  1.0
  O  O39  1  0.606  0.806  0.481  1.0
[/CIF]
.