The crystal structure described by Li2Cr(PO3)8 crystallizes in the triclinic P1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(10), one O(19), one O(22), one O(24), one O(3), and one O(7) atom to form LiO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, and  an edgeedge with one Li(2)O6 octahedra. In the second Li site, Li(2) is bonded to one O(10), one O(15), one O(18), one O(20), one O(5), and one O(7) atom to form LiO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  an edgeedge with one Li(1)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. Cr(1) is bonded to one O(1), one O(15), one O(18), one O(21), one O(4), and one O(6) atom to form CrO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, and  an edgeedge with one Li(2)O6 octahedra. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(12), one O(2), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-44°. In the second P site, P(2) is bonded to one O(10), one O(11), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-54°. In the third P site, P(3) is bonded to one O(14), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-57°. In the fourth P site, P(4) is bonded to one O(13), one O(2), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-29°. In the fifth P site, P(5) is bonded to one O(12), one O(19), one O(20), and one O(23) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-26°. In the sixth P site, P(6) is bonded to one O(11), one O(16), one O(17), and one O(18) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 39-63°. In the seventh P site, P(7) is bonded to one O(14), one O(15), one O(17), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-62°. In the eighth P site, P(8) is bonded to one O(13), one O(21), one O(23), and one O(24) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-41°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Li(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to one Li(2) and one P(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one P(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one P(2) and one P(6) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(1) and one P(5) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one P(4) and one P(8) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one P(3) and one P(7) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Li(2), one Cr(1), and one P(7) atom. In the sixteenth O site, O(16) is bonded in a single-bond geometry to one P(6) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one P(6) and one P(7) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Li(2), one Cr(1), and one P(6) atom. In the nineteenth O site, O(19) is bonded in a bent 150 degrees geometry to one Li(1) and one P(5) atom. In the twentieth O site, O(20) is bonded in a linear geometry to one Li(2) and one P(5) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(8) atom. In the twenty-second O site, O(22) is bonded in a bent 150 degrees geometry to one Li(1) and one P(7) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one P(5) and one P(8) atom. In the twenty-fourth O site, O(24) is bonded in a bent 150 degrees geometry to one Li(1) and one P(8) atom. is represented by the CIF card [CIF]
data_Li2Cr(PO3)8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.225
_cell_length_b   7.361
_cell_length_c   9.883
_cell_angle_alpha   98.442
_cell_angle_beta   109.166
_cell_angle_gamma   109.959
_symmetry_Int_Tables_number   1
_cell_volume   446.351
_cell_formula_units_Z   1
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  0.808  0.555  0.751  1.0
  Li  Li1  1  0.995  0.507  0.516  1.0
  Cr  Cr2  1  0.201  0.455  0.255  1.0
  P  P3  1  0.291  0.758  0.029  1.0
  P  P4  1  0.730  0.762  0.469  1.0
  P  P5  1  0.975  0.174  0.680  1.0
  P  P6  1  0.502  0.209  0.199  1.0
  P  P7  1  0.504  0.801  0.824  1.0
  P  P8  1  0.011  0.808  0.295  1.0
  P  P9  1  0.272  0.229  0.515  1.0
  P  P10  1  0.712  0.257  0.987  1.0
  O  O11  1  0.251  0.593  0.104  1.0
  O  O12  1  0.426  0.969  0.162  1.0
  O  O13  1  0.110  0.762  0.904  1.0
  O  O14  1  0.489  0.651  0.400  1.0
  O  O15  1  0.704  0.305  0.339  1.0
  O  O16  1  0.316  0.259  0.203  1.0
  O  O17  1  0.942  0.362  0.669  1.0
  O  O18  1  0.771  0.989  0.546  1.0
  O  O19  1  0.018  0.132  0.828  1.0
  O  O20  1  0.867  0.688  0.573  1.0
  O  O21  1  0.807  0.793  0.333  1.0
  O  O22  1  0.473  0.746  0.970  1.0
  O  O23  1  0.542  0.265  0.057  1.0
  O  O24  1  0.174  0.180  0.636  1.0
  O  O25  1  0.149  0.328  0.416  1.0
  O  O26  1  0.968  0.837  0.143  1.0
  O  O27  1  0.212  0.004  0.420  1.0
  O  O28  1  0.064  0.630  0.324  1.0
  O  O29  1  0.679  0.750  0.803  1.0
  O  O30  1  0.298  0.704  0.685  1.0
  O  O31  1  0.910  0.259  0.107  1.0
  O  O32  1  0.510  0.338  0.590  1.0
  O  O33  1  0.577  0.040  0.865  1.0
  O  O34  1  0.746  0.414  0.908  1.0
[/CIF]
.
The crystal structure described by Li2Cr(PO3)8 crystallizes in the triclinic P1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(10), one O(19), one O(22), one O(24), one O(3), and one O(7) atom to form LiO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, and  an edgeedge with one Li(2)O6 octahedra. In the second Li site, Li(2) is bonded to one O(10), one O(15), one O(18), one O(20), one O(5), and one O(7) atom to form LiO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  an edgeedge with one Li(1)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. Cr(1) is bonded to one O(1), one O(15), one O(18), one O(21), one O(4), and one O(6) atom to form CrO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, and  an edgeedge with one Li(2)O6 octahedra. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(12), one O(2), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-44°. In the second P site, P(2) is bonded to one O(10), one O(11), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-54°. In the third P site, P(3) is bonded to one O(14), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-57°. In the fourth P site, P(4) is bonded to one O(13), one O(2), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-29°. In the fifth P site, P(5) is bonded to one O(12), one O(19), one O(20), and one O(23) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-26°. In the sixth P site, P(6) is bonded to one O(11), one O(16), one O(17), and one O(18) atom to form PO4 tetrahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 39-63°. In the seventh P site, P(7) is bonded to one O(14), one O(15), one O(17), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-62°. In the eighth P site, P(8) is bonded to one O(13), one O(21), one O(23), and one O(24) atom to form PO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-41°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Li(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to one Li(2) and one P(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one P(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Li(1), one Li(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one P(2) and one P(6) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one P(1) and one P(5) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one P(4) and one P(8) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one P(3) and one P(7) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Li(2), one Cr(1), and one P(7) atom. In the sixteenth O site, O(16) is bonded in a single-bond geometry to one P(6) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one P(6) and one P(7) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Li(2), one Cr(1), and one P(6) atom. In the nineteenth O site, O(19) is bonded in a bent 150 degrees geometry to one Li(1) and one P(5) atom. In the twentieth O site, O(20) is bonded in a linear geometry to one Li(2) and one P(5) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(8) atom. In the twenty-second O site, O(22) is bonded in a bent 150 degrees geometry to one Li(1) and one P(7) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one P(5) and one P(8) atom. In the twenty-fourth O site, O(24) is bonded in a bent 150 degrees geometry to one Li(1) and one P(8) atom. is represented by the CIF card [CIF]
data_Li2Cr(PO3)8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.225
_cell_length_b   7.361
_cell_length_c   9.883
_cell_angle_alpha   98.442
_cell_angle_beta   109.166
_cell_angle_gamma   109.959
_symmetry_Int_Tables_number   1
_cell_volume   446.351
_cell_formula_units_Z   1
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  0.808  0.555  0.751  1.0
  Li  Li1  1  0.995  0.507  0.516  1.0
  Cr  Cr2  1  0.201  0.455  0.255  1.0
  P  P3  1  0.291  0.758  0.029  1.0
  P  P4  1  0.730  0.762  0.469  1.0
  P  P5  1  0.975  0.174  0.680  1.0
  P  P6  1  0.502  0.209  0.199  1.0
  P  P7  1  0.504  0.801  0.824  1.0
  P  P8  1  0.011  0.808  0.295  1.0
  P  P9  1  0.272  0.229  0.515  1.0
  P  P10  1  0.712  0.257  0.987  1.0
  O  O11  1  0.251  0.593  0.104  1.0
  O  O12  1  0.426  0.969  0.162  1.0
  O  O13  1  0.110  0.762  0.904  1.0
  O  O14  1  0.489  0.651  0.400  1.0
  O  O15  1  0.704  0.305  0.339  1.0
  O  O16  1  0.316  0.259  0.203  1.0
  O  O17  1  0.942  0.362  0.669  1.0
  O  O18  1  0.771  0.989  0.546  1.0
  O  O19  1  0.018  0.132  0.828  1.0
  O  O20  1  0.867  0.688  0.573  1.0
  O  O21  1  0.807  0.793  0.333  1.0
  O  O22  1  0.473  0.746  0.970  1.0
  O  O23  1  0.542  0.265  0.057  1.0
  O  O24  1  0.174  0.180  0.636  1.0
  O  O25  1  0.149  0.328  0.416  1.0
  O  O26  1  0.968  0.837  0.143  1.0
  O  O27  1  0.212  0.004  0.420  1.0
  O  O28  1  0.064  0.630  0.324  1.0
  O  O29  1  0.679  0.750  0.803  1.0
  O  O30  1  0.298  0.704  0.685  1.0
  O  O31  1  0.910  0.259  0.107  1.0
  O  O32  1  0.510  0.338  0.590  1.0
  O  O33  1  0.577  0.040  0.865  1.0
  O  O34  1  0.746  0.414  0.908  1.0
[/CIF]
.