The crystal structure described by LiCoP2O7 crystallizes in the monoclinic C2/c space group. Li(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 61°. 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, corners with three equivalent P(2)O4 tetrahedra,  a cornercorner with one Li(1)O5 trigonal bipyramid, and edges with two equivalent Li(1)O5 trigonal bipyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent Co(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent Li(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 43-54°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with three equivalent Co(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with three equivalent Li(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 44-55°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar 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 distorted trigonal non-coplanar geometry to one Li(1), one Co(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar 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 bent 150 degrees geometry to one Co(1) and one P(1) atom. is represented by the CIF file [CIF]
data_LiCoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.160
_cell_length_b   6.160
_cell_length_c   13.035
_cell_angle_alpha   74.758
_cell_angle_beta   74.758
_cell_angle_gamma   80.481
_symmetry_Int_Tables_number   1
_cell_volume   457.971
_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  0.765  0.000  0.145  1.0
  Li  Li1  1  1.000  0.235  0.355  1.0
  Li  Li2  1  0.235  1.000  0.855  1.0
  Li  Li3  1  0.000  0.765  0.645  1.0
  Co  Co4  1  0.877  0.406  0.860  1.0
  Co  Co5  1  0.123  0.594  0.140  1.0
  Co  Co6  1  0.594  0.123  0.640  1.0
  Co  Co7  1  0.406  0.877  0.360  1.0
  P  P8  1  0.579  0.665  0.573  1.0
  P  P9  1  0.421  0.335  0.427  1.0
  P  P10  1  0.665  0.579  0.073  1.0
  P  P11  1  0.249  0.088  0.138  1.0
  P  P12  1  0.751  0.912  0.862  1.0
  P  P13  1  0.335  0.421  0.927  1.0
  P  P14  1  0.088  0.249  0.638  1.0
  P  P15  1  0.912  0.751  0.362  1.0
  O  O16  1  0.204  0.394  0.521  1.0
  O  O17  1  0.190  0.338  0.869  1.0
  O  O18  1  0.109  0.922  0.119  1.0
  O  O19  1  0.662  0.810  0.631  1.0
  O  O20  1  0.275  0.080  0.682  1.0
  O  O21  1  0.429  0.978  0.202  1.0
  O  O22  1  0.078  0.891  0.381  1.0
  O  O23  1  0.606  0.796  0.979  1.0
  O  O24  1  0.810  0.662  0.131  1.0
  O  O25  1  0.978  0.429  0.702  1.0
  O  O26  1  0.725  0.920  0.318  1.0
  O  O27  1  0.386  0.789  0.517  1.0
  O  O28  1  0.080  0.275  0.182  1.0
  O  O29  1  0.796  0.606  0.479  1.0
  O  O30  1  0.436  0.525  0.148  1.0
  O  O31  1  0.211  0.614  0.983  1.0
  O  O32  1  0.338  0.190  0.369  1.0
  O  O33  1  0.922  0.109  0.619  1.0
  O  O34  1  0.525  0.436  0.648  1.0
  O  O35  1  0.614  0.211  0.483  1.0
  O  O36  1  0.475  0.564  0.352  1.0
  O  O37  1  0.394  0.204  0.021  1.0
  O  O38  1  0.022  0.571  0.298  1.0
  O  O39  1  0.571  0.022  0.798  1.0
  O  O40  1  0.564  0.475  0.852  1.0
  O  O41  1  0.789  0.386  0.017  1.0
  O  O42  1  0.891  0.078  0.881  1.0
  O  O43  1  0.920  0.725  0.818  1.0
[/CIF]
.
The crystal structure described by LiCoP2O7 crystallizes in the monoclinic C2/c space group. Li(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 61°. 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, corners with three equivalent P(2)O4 tetrahedra,  a cornercorner with one Li(1)O5 trigonal bipyramid, and edges with two equivalent Li(1)O5 trigonal bipyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent Co(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent Li(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 43-54°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with three equivalent Co(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with three equivalent Li(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 44-55°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar 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 distorted trigonal non-coplanar geometry to one Li(1), one Co(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar 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 bent 150 degrees geometry to one Co(1) and one P(1) atom. is represented by the CIF file [CIF]
data_LiCoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.160
_cell_length_b   6.160
_cell_length_c   13.035
_cell_angle_alpha   74.758
_cell_angle_beta   74.758
_cell_angle_gamma   80.481
_symmetry_Int_Tables_number   1
_cell_volume   457.971
_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  0.765  0.000  0.145  1.0
  Li  Li1  1  1.000  0.235  0.355  1.0
  Li  Li2  1  0.235  1.000  0.855  1.0
  Li  Li3  1  0.000  0.765  0.645  1.0
  Co  Co4  1  0.877  0.406  0.860  1.0
  Co  Co5  1  0.123  0.594  0.140  1.0
  Co  Co6  1  0.594  0.123  0.640  1.0
  Co  Co7  1  0.406  0.877  0.360  1.0
  P  P8  1  0.579  0.665  0.573  1.0
  P  P9  1  0.421  0.335  0.427  1.0
  P  P10  1  0.665  0.579  0.073  1.0
  P  P11  1  0.249  0.088  0.138  1.0
  P  P12  1  0.751  0.912  0.862  1.0
  P  P13  1  0.335  0.421  0.927  1.0
  P  P14  1  0.088  0.249  0.638  1.0
  P  P15  1  0.912  0.751  0.362  1.0
  O  O16  1  0.204  0.394  0.521  1.0
  O  O17  1  0.190  0.338  0.869  1.0
  O  O18  1  0.109  0.922  0.119  1.0
  O  O19  1  0.662  0.810  0.631  1.0
  O  O20  1  0.275  0.080  0.682  1.0
  O  O21  1  0.429  0.978  0.202  1.0
  O  O22  1  0.078  0.891  0.381  1.0
  O  O23  1  0.606  0.796  0.979  1.0
  O  O24  1  0.810  0.662  0.131  1.0
  O  O25  1  0.978  0.429  0.702  1.0
  O  O26  1  0.725  0.920  0.318  1.0
  O  O27  1  0.386  0.789  0.517  1.0
  O  O28  1  0.080  0.275  0.182  1.0
  O  O29  1  0.796  0.606  0.479  1.0
  O  O30  1  0.436  0.525  0.148  1.0
  O  O31  1  0.211  0.614  0.983  1.0
  O  O32  1  0.338  0.190  0.369  1.0
  O  O33  1  0.922  0.109  0.619  1.0
  O  O34  1  0.525  0.436  0.648  1.0
  O  O35  1  0.614  0.211  0.483  1.0
  O  O36  1  0.475  0.564  0.352  1.0
  O  O37  1  0.394  0.204  0.021  1.0
  O  O38  1  0.022  0.571  0.298  1.0
  O  O39  1  0.571  0.022  0.798  1.0
  O  O40  1  0.564  0.475  0.852  1.0
  O  O41  1  0.789  0.386  0.017  1.0
  O  O42  1  0.891  0.078  0.881  1.0
  O  O43  1  0.920  0.725  0.818  1.0
[/CIF]
.