The material structure described by LiFeCPO7 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(28), one O(4), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 27-49°. In the second Li site, Li(2) is bonded to one O(10), one O(11), one O(13), and one O(15) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 26-51°. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one O(16), one O(17), one O(19), one O(20), and one O(21) atom. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(1), one O(24), one O(25), and one O(27) atom. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form distorted FeO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(10), one O(11), one O(12), one O(14), one O(7), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the third Fe site, Fe(3) is bonded to one O(15), one O(17), one O(18), one O(19), one O(20), and one O(22) atom to form distorted FeO6 octahedra that share  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the fourth Fe site, Fe(4) is bonded to one O(21), one O(23), one O(24), one O(25), one O(26), and one O(28) atom to form distorted FeO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(27), and one O(3) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(12), one O(14), and one O(16) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(13), one O(15), and one O(17) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(2), one O(26), and one O(28) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  an edgeedge with one Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-45°. In the second P site, P(2) is bonded to one O(10), one O(11), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  an edgeedge with one Li(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-44°. In the third P site, P(3) is bonded to one O(18), one O(19), one O(21), and one O(23) atom to form PO4 tetrahedra that share corners with two equivalent Fe(3)O6 octahedra and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-47°. In the fourth P site, P(4) is bonded to one O(20), one O(22), one O(24), and one O(25) atom to form PO4 tetrahedra that share corners with two equivalent Fe(3)O6 octahedra and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-48°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(4), one Fe(1), and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Li(1) and one C(4) atom. In the third O site, O(3) is bonded in a water-like geometry to one Fe(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Fe(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Li(1), one Fe(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Li(2), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Li(2), one Fe(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Fe(2) and one C(2) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Li(2) and one C(3) atom. In the fourteenth O site, O(14) is bonded in an L-shaped geometry to one Fe(2) and one C(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Li(2), one Fe(3), and one C(3) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Li(3) and one C(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Li(3), one Fe(3), and one C(3) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(3) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Li(3), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded in a distorted T-shaped geometry to one Li(3), one Fe(3), and one P(4) atom. In the twenty-first O site, O(21) is bonded in a trigonal planar geometry to one Li(3), one Fe(4), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(4) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one Fe(4) and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Li(4), one Fe(4), and one P(4) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Li(4), one Fe(4), and one P(4) atom. In the twenty-sixth O site, O(26) is bonded in a water-like geometry to one Fe(4) and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a bent 120 degrees geometry to one Li(4) and one C(1) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Li(1), one Fe(4), and one C(4) atom. is represented by the CIF card [CIF]
data_LiFePCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.967
_cell_length_b   5.174
_cell_length_c   6.438
_cell_angle_alpha   89.884
_cell_angle_beta   89.688
_cell_angle_gamma   84.694
_symmetry_Int_Tables_number   1
_cell_volume   562.748
_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  0.058  0.772  0.251  1.0
  Li  Li1  1  0.443  0.223  0.757  1.0
  Li  Li2  1  0.641  0.246  0.452  1.0
  Li  Li3  1  0.944  0.226  0.751  1.0
  Fe  Fe4  1  0.167  0.802  0.750  1.0
  Fe  Fe5  1  0.334  0.205  0.248  1.0
  Fe  Fe6  1  0.669  0.803  0.757  1.0
  Fe  Fe7  1  0.831  0.198  0.254  1.0
  P  P8  1  0.212  0.734  0.250  1.0
  P  P9  1  0.288  0.271  0.748  1.0
  P  P10  1  0.711  0.735  0.256  1.0
  P  P11  1  0.788  0.276  0.748  1.0
  C  C12  1  0.021  0.703  0.752  1.0
  C  C13  1  0.478  0.285  0.260  1.0
  C  C14  1  0.524  0.704  0.740  1.0
  C  C15  1  0.978  0.294  0.248  1.0
  O  O16  1  0.033  0.946  0.752  1.0
  O  O17  1  0.044  0.387  0.250  1.0
  O  O18  1  0.085  0.541  0.751  1.0
  O  O19  1  0.156  0.799  0.063  1.0
  O  O20  1  0.156  0.800  0.437  1.0
  O  O21  1  0.214  0.121  0.749  1.0
  O  O22  1  0.240  0.441  0.250  1.0
  O  O23  1  0.260  0.564  0.748  1.0
  O  O24  1  0.286  0.885  0.249  1.0
  O  O25  1  0.344  0.207  0.561  1.0
  O  O26  1  0.343  0.208  0.936  1.0
  O  O27  1  0.420  0.468  0.247  1.0
  O  O28  1  0.458  0.610  0.742  1.0
  O  O29  1  0.453  0.055  0.249  1.0
  O  O30  1  0.536  0.946  0.751  1.0
  O  O31  1  0.549  0.328  0.282  1.0
  O  O32  1  0.589  0.542  0.729  1.0
  O  O33  1  0.663  0.796  0.058  1.0
  O  O34  1  0.659  0.841  0.440  1.0
  O  O35  1  0.711  0.140  0.733  1.0
  O  O36  1  0.732  0.435  0.283  1.0
  O  O37  1  0.763  0.571  0.741  1.0
  O  O38  1  0.789  0.868  0.252  1.0
  O  O39  1  0.846  0.199  0.566  1.0
  O  O40  1  0.839  0.204  0.942  1.0
  O  O41  1  0.914  0.454  0.247  1.0
  O  O42  1  0.955  0.610  0.752  1.0
  O  O43  1  0.967  0.051  0.247  1.0
[/CIF]
.
The material structure described by LiFeCPO7 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(28), one O(4), and one O(5) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 27-49°. In the second Li site, Li(2) is bonded to one O(10), one O(11), one O(13), and one O(15) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 26-51°. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one O(16), one O(17), one O(19), one O(20), and one O(21) atom. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(1), one O(24), one O(25), and one O(27) atom. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form distorted FeO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(10), one O(11), one O(12), one O(14), one O(7), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the third Fe site, Fe(3) is bonded to one O(15), one O(17), one O(18), one O(19), one O(20), and one O(22) atom to form distorted FeO6 octahedra that share  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. In the fourth Fe site, Fe(4) is bonded to one O(21), one O(23), one O(24), one O(25), one O(26), and one O(28) atom to form distorted FeO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(27), and one O(3) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(12), one O(14), and one O(16) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(13), one O(15), and one O(17) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(2), one O(26), and one O(28) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  an edgeedge with one Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-45°. In the second P site, P(2) is bonded to one O(10), one O(11), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and  an edgeedge with one Li(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-44°. In the third P site, P(3) is bonded to one O(18), one O(19), one O(21), and one O(23) atom to form PO4 tetrahedra that share corners with two equivalent Fe(3)O6 octahedra and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-47°. In the fourth P site, P(4) is bonded to one O(20), one O(22), one O(24), and one O(25) atom to form PO4 tetrahedra that share corners with two equivalent Fe(3)O6 octahedra and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-48°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Li(4), one Fe(1), and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Li(1) and one C(4) atom. In the third O site, O(3) is bonded in a water-like geometry to one Fe(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Fe(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Li(1), one Fe(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Li(2), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Li(2), one Fe(2), and one P(2) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Fe(2) and one C(2) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Li(2) and one C(3) atom. In the fourteenth O site, O(14) is bonded in an L-shaped geometry to one Fe(2) and one C(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Li(2), one Fe(3), and one C(3) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Li(3) and one C(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Li(3), one Fe(3), and one C(3) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(3) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Li(3), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded in a distorted T-shaped geometry to one Li(3), one Fe(3), and one P(4) atom. In the twenty-first O site, O(21) is bonded in a trigonal planar geometry to one Li(3), one Fe(4), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(4) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one Fe(4) and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Li(4), one Fe(4), and one P(4) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Li(4), one Fe(4), and one P(4) atom. In the twenty-sixth O site, O(26) is bonded in a water-like geometry to one Fe(4) and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a bent 120 degrees geometry to one Li(4) and one C(1) atom. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Li(1), one Fe(4), and one C(4) atom. is represented by the CIF card [CIF]
data_LiFePCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.967
_cell_length_b   5.174
_cell_length_c   6.438
_cell_angle_alpha   89.884
_cell_angle_beta   89.688
_cell_angle_gamma   84.694
_symmetry_Int_Tables_number   1
_cell_volume   562.748
_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  0.058  0.772  0.251  1.0
  Li  Li1  1  0.443  0.223  0.757  1.0
  Li  Li2  1  0.641  0.246  0.452  1.0
  Li  Li3  1  0.944  0.226  0.751  1.0
  Fe  Fe4  1  0.167  0.802  0.750  1.0
  Fe  Fe5  1  0.334  0.205  0.248  1.0
  Fe  Fe6  1  0.669  0.803  0.757  1.0
  Fe  Fe7  1  0.831  0.198  0.254  1.0
  P  P8  1  0.212  0.734  0.250  1.0
  P  P9  1  0.288  0.271  0.748  1.0
  P  P10  1  0.711  0.735  0.256  1.0
  P  P11  1  0.788  0.276  0.748  1.0
  C  C12  1  0.021  0.703  0.752  1.0
  C  C13  1  0.478  0.285  0.260  1.0
  C  C14  1  0.524  0.704  0.740  1.0
  C  C15  1  0.978  0.294  0.248  1.0
  O  O16  1  0.033  0.946  0.752  1.0
  O  O17  1  0.044  0.387  0.250  1.0
  O  O18  1  0.085  0.541  0.751  1.0
  O  O19  1  0.156  0.799  0.063  1.0
  O  O20  1  0.156  0.800  0.437  1.0
  O  O21  1  0.214  0.121  0.749  1.0
  O  O22  1  0.240  0.441  0.250  1.0
  O  O23  1  0.260  0.564  0.748  1.0
  O  O24  1  0.286  0.885  0.249  1.0
  O  O25  1  0.344  0.207  0.561  1.0
  O  O26  1  0.343  0.208  0.936  1.0
  O  O27  1  0.420  0.468  0.247  1.0
  O  O28  1  0.458  0.610  0.742  1.0
  O  O29  1  0.453  0.055  0.249  1.0
  O  O30  1  0.536  0.946  0.751  1.0
  O  O31  1  0.549  0.328  0.282  1.0
  O  O32  1  0.589  0.542  0.729  1.0
  O  O33  1  0.663  0.796  0.058  1.0
  O  O34  1  0.659  0.841  0.440  1.0
  O  O35  1  0.711  0.140  0.733  1.0
  O  O36  1  0.732  0.435  0.283  1.0
  O  O37  1  0.763  0.571  0.741  1.0
  O  O38  1  0.789  0.868  0.252  1.0
  O  O39  1  0.846  0.199  0.566  1.0
  O  O40  1  0.839  0.204  0.942  1.0
  O  O41  1  0.914  0.454  0.247  1.0
  O  O42  1  0.955  0.610  0.752  1.0
  O  O43  1  0.967  0.051  0.247  1.0
[/CIF]
.