The compound described by LiCoP2O7 crystallizes in the monoclinic Pc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(10), one O(3), one O(5), and one O(8) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(11), one O(13), one O(14), and one O(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(11), one O(13), one O(6), one O(7), and one O(8) atom. In the second Co site, Co(2) is bonded to one O(1), one O(14), one O(3), one O(4), one O(5), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  a cornercorner with one Li(1)O5 trigonal bipyramid, and  an edgeedge with one Li(1)O5 trigonal bipyramid. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(12), one O(13), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one Li(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 16°. In the second P site, P(2) is bonded to one O(14), one O(2), one O(5), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Co(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent Li(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 42-54°. In the third P site, P(3) is bonded to one O(12), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 33°. In the fourth P site, P(4) is bonded to one O(1), one O(11), one O(2), and one O(3) atom to form PO4 tetrahedra that share corners with two equivalent Co(2)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 38-56°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(2), and one P(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(2) and one P(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Co(2), and one P(4) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Co(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Li(2), one Co(2), and one P(1) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Li(1) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Li(2), one Co(1), and one P(4) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Li(2), one Co(1), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Li(2), one Co(2), 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   5.193
_cell_length_b   8.007
_cell_length_c   13.772
_cell_angle_alpha   68.435
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   532.546
_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  0.520  0.419  0.826  1.0
  Li  Li1  1  0.914  0.973  0.170  1.0
  Li  Li2  1  0.086  0.973  0.670  1.0
  Li  Li3  1  0.480  0.419  0.326  1.0
  Co  Co4  1  0.035  0.730  0.371  1.0
  Co  Co5  1  0.965  0.730  0.871  1.0
  Co  Co6  1  0.515  0.269  0.145  1.0
  Co  Co7  1  0.485  0.269  0.645  1.0
  P  P8  1  0.448  0.820  0.197  1.0
  P  P9  1  0.034  0.303  0.982  1.0
  P  P10  1  0.542  0.699  0.518  1.0
  P  P11  1  0.552  0.820  0.697  1.0
  P  P12  1  0.982  0.179  0.306  1.0
  P  P13  1  0.966  0.303  0.482  1.0
  P  P14  1  0.458  0.699  0.018  1.0
  P  P15  1  0.018  0.179  0.806  1.0
  O  O16  1  0.279  0.272  0.772  1.0
  O  O17  1  0.985  0.157  0.927  1.0
  O  O18  1  0.783  0.281  0.748  1.0
  O  O19  1  0.450  0.517  0.596  1.0
  O  O20  1  0.324  0.312  0.998  1.0
  O  O21  1  0.828  0.696  0.493  1.0
  O  O22  1  0.369  0.774  0.422  1.0
  O  O23  1  0.915  0.477  0.903  1.0
  O  O24  1  0.508  0.014  0.187  1.0
  O  O25  1  0.363  0.685  0.766  1.0
  O  O26  1  0.966  0.986  0.308  1.0
  O  O27  1  0.514  0.838  0.576  1.0
  O  O28  1  0.836  0.773  0.723  1.0
  O  O29  1  0.883  0.226  0.084  1.0
  O  O30  1  0.631  0.774  0.922  1.0
  O  O31  1  0.721  0.272  0.272  1.0
  O  O32  1  0.015  0.157  0.427  1.0
  O  O33  1  0.492  0.014  0.687  1.0
  O  O34  1  0.217  0.281  0.248  1.0
  O  O35  1  0.034  0.986  0.808  1.0
  O  O36  1  0.550  0.517  0.096  1.0
  O  O37  1  0.117  0.226  0.584  1.0
  O  O38  1  0.676  0.312  0.498  1.0
  O  O39  1  0.172  0.696  0.993  1.0
  O  O40  1  0.085  0.477  0.403  1.0
  O  O41  1  0.637  0.685  0.266  1.0
  O  O42  1  0.486  0.838  0.076  1.0
  O  O43  1  0.164  0.773  0.223  1.0
[/CIF]
.
The compound described by LiCoP2O7 crystallizes in the monoclinic Pc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(10), one O(3), one O(5), and one O(8) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to one O(11), one O(13), one O(14), and one O(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(11), one O(13), one O(6), one O(7), and one O(8) atom. In the second Co site, Co(2) is bonded to one O(1), one O(14), one O(3), one O(4), one O(5), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra,  a cornercorner with one Li(1)O5 trigonal bipyramid, and  an edgeedge with one Li(1)O5 trigonal bipyramid. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(12), one O(13), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one Li(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 16°. In the second P site, P(2) is bonded to one O(14), one O(2), one O(5), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Co(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent Li(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 42-54°. In the third P site, P(3) is bonded to one O(12), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 33°. In the fourth P site, P(4) is bonded to one O(1), one O(11), one O(2), and one O(3) atom to form PO4 tetrahedra that share corners with two equivalent Co(2)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 38-56°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(2), and one P(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(2) and one P(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Co(2), and one P(4) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Co(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(1), one Co(1), and one P(2) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Li(2), one Co(2), and one P(1) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Li(1) and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Li(2), one Co(1), and one P(4) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(1) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Li(2), one Co(1), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Li(2), one Co(2), 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   5.193
_cell_length_b   8.007
_cell_length_c   13.772
_cell_angle_alpha   68.435
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   532.546
_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  0.520  0.419  0.826  1.0
  Li  Li1  1  0.914  0.973  0.170  1.0
  Li  Li2  1  0.086  0.973  0.670  1.0
  Li  Li3  1  0.480  0.419  0.326  1.0
  Co  Co4  1  0.035  0.730  0.371  1.0
  Co  Co5  1  0.965  0.730  0.871  1.0
  Co  Co6  1  0.515  0.269  0.145  1.0
  Co  Co7  1  0.485  0.269  0.645  1.0
  P  P8  1  0.448  0.820  0.197  1.0
  P  P9  1  0.034  0.303  0.982  1.0
  P  P10  1  0.542  0.699  0.518  1.0
  P  P11  1  0.552  0.820  0.697  1.0
  P  P12  1  0.982  0.179  0.306  1.0
  P  P13  1  0.966  0.303  0.482  1.0
  P  P14  1  0.458  0.699  0.018  1.0
  P  P15  1  0.018  0.179  0.806  1.0
  O  O16  1  0.279  0.272  0.772  1.0
  O  O17  1  0.985  0.157  0.927  1.0
  O  O18  1  0.783  0.281  0.748  1.0
  O  O19  1  0.450  0.517  0.596  1.0
  O  O20  1  0.324  0.312  0.998  1.0
  O  O21  1  0.828  0.696  0.493  1.0
  O  O22  1  0.369  0.774  0.422  1.0
  O  O23  1  0.915  0.477  0.903  1.0
  O  O24  1  0.508  0.014  0.187  1.0
  O  O25  1  0.363  0.685  0.766  1.0
  O  O26  1  0.966  0.986  0.308  1.0
  O  O27  1  0.514  0.838  0.576  1.0
  O  O28  1  0.836  0.773  0.723  1.0
  O  O29  1  0.883  0.226  0.084  1.0
  O  O30  1  0.631  0.774  0.922  1.0
  O  O31  1  0.721  0.272  0.272  1.0
  O  O32  1  0.015  0.157  0.427  1.0
  O  O33  1  0.492  0.014  0.687  1.0
  O  O34  1  0.217  0.281  0.248  1.0
  O  O35  1  0.034  0.986  0.808  1.0
  O  O36  1  0.550  0.517  0.096  1.0
  O  O37  1  0.117  0.226  0.584  1.0
  O  O38  1  0.676  0.312  0.498  1.0
  O  O39  1  0.172  0.696  0.993  1.0
  O  O40  1  0.085  0.477  0.403  1.0
  O  O41  1  0.637  0.685  0.266  1.0
  O  O42  1  0.486  0.838  0.076  1.0
  O  O43  1  0.164  0.773  0.223  1.0
[/CIF]
.