The compound described by Co2P2O7 crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted CoO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra and edges with three equivalent Co(1)O6 octahedra. 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 corners with six 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 four inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent P(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one P(1) atom. is represented by the CIF card [CIF]
data_Co2P2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.468
_cell_length_b   5.374
_cell_length_c   9.830
_cell_angle_alpha   89.994
_cell_angle_beta   90.012
_cell_angle_gamma   97.466
_symmetry_Int_Tables_number   1
_cell_volume   234.024
_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
  Co  Co0  1  0.385  0.088  0.158  1.0
  Co  Co1  1  0.615  0.412  0.658  1.0
  Co  Co2  1  0.616  0.912  0.842  1.0
  Co  Co3  1  0.385  0.588  0.342  1.0
  P  P4  1  0.148  0.347  0.889  1.0
  P  P5  1  0.852  0.653  0.111  1.0
  P  P6  1  0.148  0.847  0.611  1.0
  P  P7  1  0.852  0.153  0.389  1.0
  O  O8  1  1.000  0.000  0.500  1.0
  O  O9  1  0.000  0.500  0.000  1.0
  O  O10  1  0.706  0.857  0.039  1.0
  O  O11  1  0.294  0.643  0.539  1.0
  O  O12  1  0.294  0.143  0.961  1.0
  O  O13  1  0.706  0.357  0.461  1.0
  O  O14  1  0.890  0.740  0.703  1.0
  O  O15  1  0.890  0.240  0.797  1.0
  O  O16  1  0.110  0.760  0.203  1.0
  O  O17  1  0.110  0.261  0.297  1.0
  O  O18  1  0.382  0.033  0.683  1.0
  O  O19  1  0.382  0.533  0.818  1.0
  O  O20  1  0.618  0.467  0.182  1.0
  O  O21  1  0.618  0.967  0.317  1.0
[/CIF]
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The compound described by Co2P2O7 crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted CoO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra and edges with three equivalent Co(1)O6 octahedra. 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 corners with six 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 four inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent P(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Co(1) and one P(1) atom. is represented by the CIF card [CIF]
data_Co2P2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.468
_cell_length_b   5.374
_cell_length_c   9.830
_cell_angle_alpha   89.994
_cell_angle_beta   90.012
_cell_angle_gamma   97.466
_symmetry_Int_Tables_number   1
_cell_volume   234.024
_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
  Co  Co0  1  0.385  0.088  0.158  1.0
  Co  Co1  1  0.615  0.412  0.658  1.0
  Co  Co2  1  0.616  0.912  0.842  1.0
  Co  Co3  1  0.385  0.588  0.342  1.0
  P  P4  1  0.148  0.347  0.889  1.0
  P  P5  1  0.852  0.653  0.111  1.0
  P  P6  1  0.148  0.847  0.611  1.0
  P  P7  1  0.852  0.153  0.389  1.0
  O  O8  1  1.000  0.000  0.500  1.0
  O  O9  1  0.000  0.500  0.000  1.0
  O  O10  1  0.706  0.857  0.039  1.0
  O  O11  1  0.294  0.643  0.539  1.0
  O  O12  1  0.294  0.143  0.961  1.0
  O  O13  1  0.706  0.357  0.461  1.0
  O  O14  1  0.890  0.740  0.703  1.0
  O  O15  1  0.890  0.240  0.797  1.0
  O  O16  1  0.110  0.760  0.203  1.0
  O  O17  1  0.110  0.261  0.297  1.0
  O  O18  1  0.382  0.033  0.683  1.0
  O  O19  1  0.382  0.533  0.818  1.0
  O  O20  1  0.618  0.467  0.182  1.0
  O  O21  1  0.618  0.967  0.317  1.0
[/CIF]
.