The structure described by Li2Cu2F7 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one F(5), one F(6), and two equivalent F(12) atoms. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to one F(4), one F(7), two equivalent F(11), and two equivalent F(8) atoms. In the third Li site, Li(3) is bonded in a 6-coordinate geometry to one F(11), one F(8), two equivalent F(4), and two equivalent F(7) atoms. In the fourth Li site, Li(4) is bonded in a distorted see-saw-like geometry to one F(10), one F(9), and two equivalent F(2) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one F(1), one F(14), one F(2), one F(3), and two equivalent F(9) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 14-34°. In the second Cu site, Cu(2) is bonded to one F(2), one F(3), one F(4), one F(7), and two equivalent F(10) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 16-29°. In the third Cu site, Cu(3) is bonded to one F(11), one F(12), one F(13), one F(8), and two equivalent F(5) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 16-29°. In the fourth Cu site, Cu(4) is bonded to one F(1), one F(12), one F(13), one F(14), and two equivalent F(6) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 14-34°. There are fourteen inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(4) atom. In the second F site, F(2) is bonded to two equivalent Li(4), one Cu(1), and one Cu(2) atom to form distorted FLi2Cu2 trigonal pyramids that share  a cornercorner with one F(7)Li3Cu tetrahedra and corners with two equivalent F(2)Li2Cu2 trigonal pyramids. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(2) atom. In the fourth F site, F(4) is bonded in a distorted L-shaped geometry to one Li(2), two equivalent Li(3), and one Cu(2) atom. In the fifth F site, F(5) is bonded in a T-shaped geometry to one Li(1) and two equivalent Cu(3) atoms. In the sixth F site, F(6) is bonded in a T-shaped geometry to one Li(1) and two equivalent Cu(4) atoms. In the seventh F site, F(7) is bonded to one Li(2), two equivalent Li(3), and one Cu(2) atom to form FLi3Cu tetrahedra that share corners with two equivalent F(7)Li3Cu tetrahedra, corners with four equivalent F(8)Li3Cu tetrahedra, and  a cornercorner with one F(2)Li2Cu2 trigonal pyramid. In the eighth F site, F(8) is bonded to one Li(3), two equivalent Li(2), and one Cu(3) atom to form FLi3Cu tetrahedra that share corners with two equivalent F(8)Li3Cu tetrahedra, corners with four equivalent F(7)Li3Cu tetrahedra, and  a cornercorner with one F(12)Li2Cu2 trigonal pyramid. In the ninth F site, F(9) is bonded in a T-shaped geometry to one Li(4) and two equivalent Cu(1) atoms. In the tenth F site, F(10) is bonded in a T-shaped geometry to one Li(4) and two equivalent Cu(2) atoms. In the eleventh F site, F(11) is bonded in a distorted L-shaped geometry to one Li(3), two equivalent Li(2), and one Cu(3) atom. In the twelfth F site, F(12) is bonded to two equivalent Li(1), one Cu(3), and one Cu(4) atom to form distorted FLi2Cu2 trigonal pyramids that share  a cornercorner with one F(8)Li3Cu tetrahedra and corners with two equivalent F(12)Li2Cu2 trigonal pyramids. In the thirteenth F site, F(13) is bonded in a bent 150 degrees geometry to one Cu(3) and one Cu(4) atom. In the fourteenth F site, F(14) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(4) atom. is represented by the CIF card [CIF]
data_Li2Cu2F7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.920
_cell_length_b   13.069
_cell_length_c   5.245
_cell_angle_alpha   90.091
_cell_angle_beta   90.001
_cell_angle_gamma   98.620
_symmetry_Int_Tables_number   1
_cell_volume   265.662
_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
  Li  Li0  1  0.426  0.854  0.049  1.0
  Li  Li1  1  0.277  0.542  0.524  1.0
  Li  Li2  1  0.722  0.458  0.023  1.0
  Li  Li3  1  0.574  0.146  0.550  1.0
  Cu  Cu4  1  0.052  0.103  0.976  1.0
  Cu  Cu5  1  0.160  0.317  0.458  1.0
  Cu  Cu6  1  0.840  0.682  0.959  1.0
  Cu  Cu7  1  0.948  0.897  0.477  1.0
  F  F8  1  0.014  0.031  0.303  1.0
  F  F9  1  0.092  0.182  0.651  1.0
  F  F10  1  0.116  0.231  0.160  1.0
  F  F11  1  0.204  0.408  0.742  1.0
  F  F12  1  0.351  0.703  0.968  1.0
  F  F13  1  0.448  0.898  0.432  1.0
  F  F14  1  0.224  0.439  0.247  1.0
  F  F15  1  0.777  0.561  0.747  1.0
  F  F16  1  0.552  0.102  0.931  1.0
  F  F17  1  0.649  0.297  0.467  1.0
  F  F18  1  0.796  0.592  0.242  1.0
  F  F19  1  0.908  0.818  0.151  1.0
  F  F20  1  0.884  0.769  0.661  1.0
  F  F21  1  0.986  0.969  0.803  1.0
[/CIF]
.
The structure described by Li2Cu2F7 crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one F(5), one F(6), and two equivalent F(12) atoms. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to one F(4), one F(7), two equivalent F(11), and two equivalent F(8) atoms. In the third Li site, Li(3) is bonded in a 6-coordinate geometry to one F(11), one F(8), two equivalent F(4), and two equivalent F(7) atoms. In the fourth Li site, Li(4) is bonded in a distorted see-saw-like geometry to one F(10), one F(9), and two equivalent F(2) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one F(1), one F(14), one F(2), one F(3), and two equivalent F(9) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 14-34°. In the second Cu site, Cu(2) is bonded to one F(2), one F(3), one F(4), one F(7), and two equivalent F(10) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 16-29°. In the third Cu site, Cu(3) is bonded to one F(11), one F(12), one F(13), one F(8), and two equivalent F(5) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 16-29°. In the fourth Cu site, Cu(4) is bonded to one F(1), one F(12), one F(13), one F(14), and two equivalent F(6) atoms to form corner-sharing CuF6 octahedra. The corner-sharing octahedral tilt angles range from 14-34°. There are fourteen inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(4) atom. In the second F site, F(2) is bonded to two equivalent Li(4), one Cu(1), and one Cu(2) atom to form distorted FLi2Cu2 trigonal pyramids that share  a cornercorner with one F(7)Li3Cu tetrahedra and corners with two equivalent F(2)Li2Cu2 trigonal pyramids. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(2) atom. In the fourth F site, F(4) is bonded in a distorted L-shaped geometry to one Li(2), two equivalent Li(3), and one Cu(2) atom. In the fifth F site, F(5) is bonded in a T-shaped geometry to one Li(1) and two equivalent Cu(3) atoms. In the sixth F site, F(6) is bonded in a T-shaped geometry to one Li(1) and two equivalent Cu(4) atoms. In the seventh F site, F(7) is bonded to one Li(2), two equivalent Li(3), and one Cu(2) atom to form FLi3Cu tetrahedra that share corners with two equivalent F(7)Li3Cu tetrahedra, corners with four equivalent F(8)Li3Cu tetrahedra, and  a cornercorner with one F(2)Li2Cu2 trigonal pyramid. In the eighth F site, F(8) is bonded to one Li(3), two equivalent Li(2), and one Cu(3) atom to form FLi3Cu tetrahedra that share corners with two equivalent F(8)Li3Cu tetrahedra, corners with four equivalent F(7)Li3Cu tetrahedra, and  a cornercorner with one F(12)Li2Cu2 trigonal pyramid. In the ninth F site, F(9) is bonded in a T-shaped geometry to one Li(4) and two equivalent Cu(1) atoms. In the tenth F site, F(10) is bonded in a T-shaped geometry to one Li(4) and two equivalent Cu(2) atoms. In the eleventh F site, F(11) is bonded in a distorted L-shaped geometry to one Li(3), two equivalent Li(2), and one Cu(3) atom. In the twelfth F site, F(12) is bonded to two equivalent Li(1), one Cu(3), and one Cu(4) atom to form distorted FLi2Cu2 trigonal pyramids that share  a cornercorner with one F(8)Li3Cu tetrahedra and corners with two equivalent F(12)Li2Cu2 trigonal pyramids. In the thirteenth F site, F(13) is bonded in a bent 150 degrees geometry to one Cu(3) and one Cu(4) atom. In the fourteenth F site, F(14) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(4) atom. is represented by the CIF card [CIF]
data_Li2Cu2F7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.920
_cell_length_b   13.069
_cell_length_c   5.245
_cell_angle_alpha   90.091
_cell_angle_beta   90.001
_cell_angle_gamma   98.620
_symmetry_Int_Tables_number   1
_cell_volume   265.662
_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
  Li  Li0  1  0.426  0.854  0.049  1.0
  Li  Li1  1  0.277  0.542  0.524  1.0
  Li  Li2  1  0.722  0.458  0.023  1.0
  Li  Li3  1  0.574  0.146  0.550  1.0
  Cu  Cu4  1  0.052  0.103  0.976  1.0
  Cu  Cu5  1  0.160  0.317  0.458  1.0
  Cu  Cu6  1  0.840  0.682  0.959  1.0
  Cu  Cu7  1  0.948  0.897  0.477  1.0
  F  F8  1  0.014  0.031  0.303  1.0
  F  F9  1  0.092  0.182  0.651  1.0
  F  F10  1  0.116  0.231  0.160  1.0
  F  F11  1  0.204  0.408  0.742  1.0
  F  F12  1  0.351  0.703  0.968  1.0
  F  F13  1  0.448  0.898  0.432  1.0
  F  F14  1  0.224  0.439  0.247  1.0
  F  F15  1  0.777  0.561  0.747  1.0
  F  F16  1  0.552  0.102  0.931  1.0
  F  F17  1  0.649  0.297  0.467  1.0
  F  F18  1  0.796  0.592  0.242  1.0
  F  F19  1  0.908  0.818  0.151  1.0
  F  F20  1  0.884  0.769  0.661  1.0
  F  F21  1  0.986  0.969  0.803  1.0
[/CIF]
.