The compound described by CoP2O7 crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO5 trigonal bipyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with three equivalent P(1)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(6) 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(1), one O(2), one O(5), 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(1) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Co(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Co(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Co(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.151
_cell_length_b   5.037
_cell_length_c   14.844
_cell_angle_alpha   71.275
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   577.154
_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  0.350  0.090  0.612  1.0
  Co  Co1  1  0.150  0.090  0.112  1.0
  Co  Co2  1  0.850  0.910  0.888  1.0
  Co  Co3  1  0.650  0.910  0.388  1.0
  P  P4  1  0.702  0.284  0.527  1.0
  P  P5  1  0.530  0.078  0.174  1.0
  P  P6  1  0.970  0.078  0.674  1.0
  P  P7  1  0.798  0.284  0.027  1.0
  P  P8  1  0.470  0.922  0.826  1.0
  P  P9  1  0.298  0.716  0.473  1.0
  P  P10  1  0.030  0.922  0.326  1.0
  P  P11  1  0.202  0.716  0.973  1.0
  O  O12  1  0.382  0.796  0.928  1.0
  O  O13  1  0.546  0.758  0.211  1.0
  O  O14  1  0.321  0.401  0.493  1.0
  O  O15  1  0.421  0.890  0.397  1.0
  O  O16  1  0.144  0.189  0.655  1.0
  O  O17  1  0.821  0.599  0.007  1.0
  O  O18  1  0.882  0.204  0.572  1.0
  O  O19  1  0.797  0.208  0.936  1.0
  O  O20  1  0.626  0.168  0.248  1.0
  O  O21  1  0.644  0.811  0.845  1.0
  O  O22  1  0.579  0.110  0.603  1.0
  O  O23  1  0.679  0.599  0.507  1.0
  O  O24  1  0.079  0.890  0.897  1.0
  O  O25  1  0.921  0.110  0.103  1.0
  O  O26  1  0.874  0.168  0.748  1.0
  O  O27  1  0.374  0.832  0.752  1.0
  O  O28  1  0.297  0.792  0.564  1.0
  O  O29  1  0.454  0.242  0.789  1.0
  O  O30  1  0.954  0.758  0.711  1.0
  O  O31  1  0.046  0.242  0.289  1.0
  O  O32  1  0.118  0.796  0.428  1.0
  O  O33  1  0.703  0.208  0.436  1.0
  O  O34  1  0.618  0.204  0.072  1.0
  O  O35  1  0.126  0.832  0.252  1.0
  O  O36  1  0.179  0.401  0.993  1.0
  O  O37  1  0.356  0.189  0.155  1.0
  O  O38  1  0.856  0.811  0.345  1.0
  O  O39  1  0.203  0.792  0.064  1.0
[/CIF]
.
The compound described by CoP2O7 crystallizes in the monoclinic P2_1/c space group. Co(1) is bonded to one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form CoO5 trigonal bipyramids that share corners with two equivalent P(2)O4 tetrahedra and corners with three equivalent P(1)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(6) 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(1), one O(2), one O(5), 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(1) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one P(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Co(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Co(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Co(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Co(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.151
_cell_length_b   5.037
_cell_length_c   14.844
_cell_angle_alpha   71.275
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   577.154
_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  0.350  0.090  0.612  1.0
  Co  Co1  1  0.150  0.090  0.112  1.0
  Co  Co2  1  0.850  0.910  0.888  1.0
  Co  Co3  1  0.650  0.910  0.388  1.0
  P  P4  1  0.702  0.284  0.527  1.0
  P  P5  1  0.530  0.078  0.174  1.0
  P  P6  1  0.970  0.078  0.674  1.0
  P  P7  1  0.798  0.284  0.027  1.0
  P  P8  1  0.470  0.922  0.826  1.0
  P  P9  1  0.298  0.716  0.473  1.0
  P  P10  1  0.030  0.922  0.326  1.0
  P  P11  1  0.202  0.716  0.973  1.0
  O  O12  1  0.382  0.796  0.928  1.0
  O  O13  1  0.546  0.758  0.211  1.0
  O  O14  1  0.321  0.401  0.493  1.0
  O  O15  1  0.421  0.890  0.397  1.0
  O  O16  1  0.144  0.189  0.655  1.0
  O  O17  1  0.821  0.599  0.007  1.0
  O  O18  1  0.882  0.204  0.572  1.0
  O  O19  1  0.797  0.208  0.936  1.0
  O  O20  1  0.626  0.168  0.248  1.0
  O  O21  1  0.644  0.811  0.845  1.0
  O  O22  1  0.579  0.110  0.603  1.0
  O  O23  1  0.679  0.599  0.507  1.0
  O  O24  1  0.079  0.890  0.897  1.0
  O  O25  1  0.921  0.110  0.103  1.0
  O  O26  1  0.874  0.168  0.748  1.0
  O  O27  1  0.374  0.832  0.752  1.0
  O  O28  1  0.297  0.792  0.564  1.0
  O  O29  1  0.454  0.242  0.789  1.0
  O  O30  1  0.954  0.758  0.711  1.0
  O  O31  1  0.046  0.242  0.289  1.0
  O  O32  1  0.118  0.796  0.428  1.0
  O  O33  1  0.703  0.208  0.436  1.0
  O  O34  1  0.618  0.204  0.072  1.0
  O  O35  1  0.126  0.832  0.252  1.0
  O  O36  1  0.179  0.401  0.993  1.0
  O  O37  1  0.356  0.189  0.155  1.0
  O  O38  1  0.856  0.811  0.345  1.0
  O  O39  1  0.203  0.792  0.064  1.0
[/CIF]
.