The compound described by LiCoP2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. Co(1) is bonded to one O(1), one O(2), one O(3), one O(4), 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(2), one O(5), and one O(6) 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 39-57°. In the second P site, P(2) is bonded to one O(3), one O(4), one O(5), 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(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 25-56°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Li(1), one Co(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one P(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Co(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. is represented by the CIF file [CIF]
data_LiCoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.889
_cell_length_b   7.202
_cell_length_c   9.515
_cell_angle_alpha   69.443
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   506.235
_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
  Li  Li0  1  0.978  0.699  0.786  1.0
  Li  Li1  1  0.522  0.699  0.286  1.0
  Li  Li2  1  0.022  0.301  0.214  1.0
  Li  Li3  1  0.478  0.301  0.714  1.0
  Co  Co4  1  0.992  0.738  0.249  1.0
  Co  Co5  1  0.492  0.262  0.251  1.0
  Co  Co6  1  0.008  0.262  0.751  1.0
  Co  Co7  1  0.508  0.738  0.749  1.0
  P  P8  1  0.710  0.330  0.953  1.0
  P  P9  1  0.290  0.670  0.047  1.0
  P  P10  1  0.240  0.082  0.045  1.0
  P  P11  1  0.260  0.082  0.545  1.0
  P  P12  1  0.210  0.670  0.547  1.0
  P  P13  1  0.760  0.918  0.955  1.0
  P  P14  1  0.740  0.918  0.455  1.0
  P  P15  1  0.790  0.330  0.453  1.0
  O  O16  1  0.107  0.618  0.105  1.0
  O  O17  1  0.201  0.688  0.382  1.0
  O  O18  1  0.211  0.189  0.876  1.0
  O  O19  1  0.289  0.189  0.376  1.0
  O  O20  1  0.799  0.312  0.618  1.0
  O  O21  1  0.864  0.800  0.400  1.0
  O  O22  1  0.340  0.880  0.063  1.0
  O  O23  1  0.923  0.457  0.345  1.0
  O  O24  1  0.840  0.120  0.437  1.0
  O  O25  1  0.423  0.543  0.155  1.0
  O  O26  1  0.393  0.618  0.605  1.0
  O  O27  1  0.711  0.811  0.624  1.0
  O  O28  1  0.660  0.120  0.937  1.0
  O  O29  1  0.136  0.200  0.600  1.0
  O  O30  1  0.701  0.312  0.118  1.0
  O  O31  1  0.422  0.028  0.640  1.0
  O  O32  1  0.893  0.382  0.895  1.0
  O  O33  1  0.922  0.972  0.860  1.0
  O  O34  1  0.299  0.688  0.882  1.0
  O  O35  1  0.160  0.880  0.563  1.0
  O  O36  1  0.364  0.200  0.100  1.0
  O  O37  1  0.607  0.382  0.395  1.0
  O  O38  1  0.077  0.543  0.655  1.0
  O  O39  1  0.577  0.457  0.845  1.0
  O  O40  1  0.578  0.972  0.360  1.0
  O  O41  1  0.078  0.028  0.140  1.0
  O  O42  1  0.789  0.811  0.124  1.0
  O  O43  1  0.636  0.800  0.900  1.0
[/CIF]
.
The compound described by LiCoP2O7 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. Co(1) is bonded to one O(1), one O(2), one O(3), one O(4), 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(2), one O(5), and one O(6) 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 39-57°. In the second P site, P(2) is bonded to one O(3), one O(4), one O(5), 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(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 25-56°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Li(1), one Co(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one P(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Co(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. is represented by the CIF file [CIF]
data_LiCoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.889
_cell_length_b   7.202
_cell_length_c   9.515
_cell_angle_alpha   69.443
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   506.235
_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
  Li  Li0  1  0.978  0.699  0.786  1.0
  Li  Li1  1  0.522  0.699  0.286  1.0
  Li  Li2  1  0.022  0.301  0.214  1.0
  Li  Li3  1  0.478  0.301  0.714  1.0
  Co  Co4  1  0.992  0.738  0.249  1.0
  Co  Co5  1  0.492  0.262  0.251  1.0
  Co  Co6  1  0.008  0.262  0.751  1.0
  Co  Co7  1  0.508  0.738  0.749  1.0
  P  P8  1  0.710  0.330  0.953  1.0
  P  P9  1  0.290  0.670  0.047  1.0
  P  P10  1  0.240  0.082  0.045  1.0
  P  P11  1  0.260  0.082  0.545  1.0
  P  P12  1  0.210  0.670  0.547  1.0
  P  P13  1  0.760  0.918  0.955  1.0
  P  P14  1  0.740  0.918  0.455  1.0
  P  P15  1  0.790  0.330  0.453  1.0
  O  O16  1  0.107  0.618  0.105  1.0
  O  O17  1  0.201  0.688  0.382  1.0
  O  O18  1  0.211  0.189  0.876  1.0
  O  O19  1  0.289  0.189  0.376  1.0
  O  O20  1  0.799  0.312  0.618  1.0
  O  O21  1  0.864  0.800  0.400  1.0
  O  O22  1  0.340  0.880  0.063  1.0
  O  O23  1  0.923  0.457  0.345  1.0
  O  O24  1  0.840  0.120  0.437  1.0
  O  O25  1  0.423  0.543  0.155  1.0
  O  O26  1  0.393  0.618  0.605  1.0
  O  O27  1  0.711  0.811  0.624  1.0
  O  O28  1  0.660  0.120  0.937  1.0
  O  O29  1  0.136  0.200  0.600  1.0
  O  O30  1  0.701  0.312  0.118  1.0
  O  O31  1  0.422  0.028  0.640  1.0
  O  O32  1  0.893  0.382  0.895  1.0
  O  O33  1  0.922  0.972  0.860  1.0
  O  O34  1  0.299  0.688  0.882  1.0
  O  O35  1  0.160  0.880  0.563  1.0
  O  O36  1  0.364  0.200  0.100  1.0
  O  O37  1  0.607  0.382  0.395  1.0
  O  O38  1  0.077  0.543  0.655  1.0
  O  O39  1  0.577  0.457  0.845  1.0
  O  O40  1  0.578  0.972  0.360  1.0
  O  O41  1  0.078  0.028  0.140  1.0
  O  O42  1  0.789  0.811  0.124  1.0
  O  O43  1  0.636  0.800  0.900  1.0
[/CIF]
.