The compound described by Li3CrCPO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted pentagonal planar geometry to one O(2), one O(3), one O(5), and two equivalent O(6) atoms. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(4), one O(5), and one O(6) atom. Cr(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(6) atoms to form distorted CrO5 square pyramids that share corners with four equivalent P(1)O4 tetrahedra. C(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(5) atom. P(1) is bonded to one O(1), one O(4), and two equivalent O(6) atoms to form PO4 tetrahedra that share corners with four equivalent Cr(1)O5 square pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Cr(1), and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Li(1) and one C(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(2), one Cr(1), and one P(1) atom to form OLi2CrP tetrahedra that share corners with six equivalent O(6)Li2CrP trigonal pyramids and  an edgeedge with one O(5)Li3C trigonal pyramid. In the fifth O site, O(5) is bonded to one Li(1), two equivalent Li(2), and one C(1) atom to form distorted edge-sharing OLi3C trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(1), one Li(2), one Cr(1), and one P(1) atom to form distorted OLi2CrP trigonal pyramids that share corners with three equivalent O(4)Li2CrP tetrahedra,  a cornercorner with one O(6)Li2CrP trigonal pyramid,  an edgeedge with one O(6)Li2CrP trigonal pyramid, and  an edgeedge with one O(5)Li3C trigonal pyramid. is represented by the CIF file [CIF]
data_Li3CrPCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.099
_cell_length_b   6.492
_cell_length_c   8.648
_cell_angle_alpha   89.993
_cell_angle_beta   95.167
_cell_angle_gamma   89.993
_symmetry_Int_Tables_number   1
_cell_volume   285.094
_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
  C  C0  1  0.658  0.250  0.988  1.0
  C  C1  1  0.342  0.750  0.012  1.0
  Cr  Cr2  1  0.760  0.250  0.669  1.0
  Cr  Cr3  1  0.240  0.750  0.331  1.0
  Li  Li4  1  0.849  0.750  0.917  1.0
  Li  Li5  1  0.151  0.250  0.083  1.0
  Li  Li6  1  0.769  0.027  0.289  1.0
  Li  Li7  1  0.231  0.973  0.711  1.0
  Li  Li8  1  0.769  0.473  0.289  1.0
  Li  Li9  1  0.231  0.527  0.711  1.0
  O  O10  1  0.211  0.250  0.584  1.0
  O  O11  1  0.789  0.750  0.416  1.0
  O  O12  1  0.861  0.250  0.904  1.0
  O  O13  1  0.139  0.750  0.096  1.0
  O  O14  1  0.579  0.750  0.075  1.0
  O  O15  1  0.421  0.250  0.925  1.0
  O  O16  1  0.390  0.750  0.564  1.0
  O  O17  1  0.610  0.250  0.436  1.0
  O  O18  1  0.714  0.250  0.137  1.0
  O  O19  1  0.286  0.750  0.863  1.0
  O  O20  1  0.195  0.437  0.319  1.0
  O  O21  1  0.196  0.063  0.319  1.0
  O  O22  1  0.805  0.563  0.681  1.0
  O  O23  1  0.804  0.937  0.681  1.0
  P  P24  1  0.698  0.750  0.582  1.0
  P  P25  1  0.302  0.250  0.418  1.0
[/CIF]
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The compound described by Li3CrCPO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted pentagonal planar geometry to one O(2), one O(3), one O(5), and two equivalent O(6) atoms. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(4), one O(5), and one O(6) atom. Cr(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(6) atoms to form distorted CrO5 square pyramids that share corners with four equivalent P(1)O4 tetrahedra. C(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(5) atom. P(1) is bonded to one O(1), one O(4), and two equivalent O(6) atoms to form PO4 tetrahedra that share corners with four equivalent Cr(1)O5 square pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Cr(1), and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Li(1) and one C(1) atom. In the fourth O site, O(4) is bonded to two equivalent Li(2), one Cr(1), and one P(1) atom to form OLi2CrP tetrahedra that share corners with six equivalent O(6)Li2CrP trigonal pyramids and  an edgeedge with one O(5)Li3C trigonal pyramid. In the fifth O site, O(5) is bonded to one Li(1), two equivalent Li(2), and one C(1) atom to form distorted edge-sharing OLi3C trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(1), one Li(2), one Cr(1), and one P(1) atom to form distorted OLi2CrP trigonal pyramids that share corners with three equivalent O(4)Li2CrP tetrahedra,  a cornercorner with one O(6)Li2CrP trigonal pyramid,  an edgeedge with one O(6)Li2CrP trigonal pyramid, and  an edgeedge with one O(5)Li3C trigonal pyramid. is represented by the CIF file [CIF]
data_Li3CrPCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.099
_cell_length_b   6.492
_cell_length_c   8.648
_cell_angle_alpha   89.993
_cell_angle_beta   95.167
_cell_angle_gamma   89.993
_symmetry_Int_Tables_number   1
_cell_volume   285.094
_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
  C  C0  1  0.658  0.250  0.988  1.0
  C  C1  1  0.342  0.750  0.012  1.0
  Cr  Cr2  1  0.760  0.250  0.669  1.0
  Cr  Cr3  1  0.240  0.750  0.331  1.0
  Li  Li4  1  0.849  0.750  0.917  1.0
  Li  Li5  1  0.151  0.250  0.083  1.0
  Li  Li6  1  0.769  0.027  0.289  1.0
  Li  Li7  1  0.231  0.973  0.711  1.0
  Li  Li8  1  0.769  0.473  0.289  1.0
  Li  Li9  1  0.231  0.527  0.711  1.0
  O  O10  1  0.211  0.250  0.584  1.0
  O  O11  1  0.789  0.750  0.416  1.0
  O  O12  1  0.861  0.250  0.904  1.0
  O  O13  1  0.139  0.750  0.096  1.0
  O  O14  1  0.579  0.750  0.075  1.0
  O  O15  1  0.421  0.250  0.925  1.0
  O  O16  1  0.390  0.750  0.564  1.0
  O  O17  1  0.610  0.250  0.436  1.0
  O  O18  1  0.714  0.250  0.137  1.0
  O  O19  1  0.286  0.750  0.863  1.0
  O  O20  1  0.195  0.437  0.319  1.0
  O  O21  1  0.196  0.063  0.319  1.0
  O  O22  1  0.805  0.563  0.681  1.0
  O  O23  1  0.804  0.937  0.681  1.0
  P  P24  1  0.698  0.750  0.582  1.0
  P  P25  1  0.302  0.250  0.418  1.0
[/CIF]
.