The compound described by Li2Cu2F7 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a rectangular see-saw-like geometry to one F(1), one F(2), one F(3), and one F(4) atom. In the second Li site, Li(2) is bonded to one F(3), one F(5), one F(6), and one F(7) atom to form LiF4 tetrahedra that share corners with three equivalent Cu(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 49-59°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(5), and one F(6) atom to form distorted CuF6 octahedra that share corners with three equivalent Li(2)F4 tetrahedra. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), and one F(7) atom. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cu(1), and one Cu(2) atom. In the second F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cu(1), and one Cu(2) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), one Cu(1), and one Cu(2) atom. In the fourth F site, F(4) is bonded in a trigonal planar geometry to one Li(1), one Cu(1), and one Cu(2) atom. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Li(2), one Cu(1), and one Cu(2) atom. In the sixth F site, F(6) is bonded in a bent 120 degrees geometry to one Li(2) and one Cu(1) atom. In the seventh F site, F(7) is bonded in a bent 120 degrees geometry to one Li(2) and one Cu(2) atom. is represented by the CIF card [CIF]
data_Li2Cu2F7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.900
_cell_length_b   7.029
_cell_length_c   13.036
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   540.595
_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  0.408  0.257  0.048  1.0
  Li  Li1  1  0.336  0.754  0.188  1.0
  Li  Li2  1  0.836  0.254  0.312  1.0
  Li  Li3  1  0.908  0.757  0.452  1.0
  Li  Li4  1  0.092  0.257  0.548  1.0
  Li  Li5  1  0.164  0.754  0.688  1.0
  Li  Li6  1  0.664  0.254  0.812  1.0
  Li  Li7  1  0.592  0.757  0.952  1.0
  Cu  Cu8  1  0.852  0.523  0.103  1.0
  Cu  Cu9  1  0.870  0.996  0.105  1.0
  Cu  Cu10  1  0.370  0.496  0.395  1.0
  Cu  Cu11  1  0.352  0.023  0.397  1.0
  Cu  Cu12  1  0.648  0.523  0.603  1.0
  Cu  Cu13  1  0.630  0.996  0.605  1.0
  Cu  Cu14  1  0.130  0.496  0.895  1.0
  Cu  Cu15  1  0.148  0.023  0.897  1.0
  F  F16  1  0.183  0.450  0.036  1.0
  F  F17  1  0.204  0.053  0.041  1.0
  F  F18  1  0.595  0.724  0.102  1.0
  F  F19  1  0.720  0.250  0.094  1.0
  F  F20  1  0.032  0.758  0.120  1.0
  F  F21  1  0.914  0.475  0.238  1.0
  F  F22  1  0.906  0.030  0.241  1.0
  F  F23  1  0.406  0.530  0.259  1.0
  F  F24  1  0.414  0.975  0.262  1.0
  F  F25  1  0.532  0.258  0.380  1.0
  F  F26  1  0.220  0.750  0.406  1.0
  F  F27  1  0.095  0.224  0.398  1.0
  F  F28  1  0.704  0.553  0.459  1.0
  F  F29  1  0.683  0.950  0.464  1.0
  F  F30  1  0.317  0.450  0.536  1.0
  F  F31  1  0.296  0.053  0.541  1.0
  F  F32  1  0.905  0.724  0.602  1.0
  F  F33  1  0.780  0.250  0.594  1.0
  F  F34  1  0.468  0.758  0.620  1.0
  F  F35  1  0.586  0.475  0.738  1.0
  F  F36  1  0.594  0.030  0.741  1.0
  F  F37  1  0.094  0.530  0.759  1.0
  F  F38  1  0.086  0.975  0.762  1.0
  F  F39  1  0.968  0.258  0.880  1.0
  F  F40  1  0.280  0.750  0.906  1.0
  F  F41  1  0.405  0.224  0.898  1.0
  F  F42  1  0.796  0.553  0.959  1.0
  F  F43  1  0.817  0.950  0.964  1.0
[/CIF]
.
The compound described by Li2Cu2F7 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a rectangular see-saw-like geometry to one F(1), one F(2), one F(3), and one F(4) atom. In the second Li site, Li(2) is bonded to one F(3), one F(5), one F(6), and one F(7) atom to form LiF4 tetrahedra that share corners with three equivalent Cu(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 49-59°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(5), and one F(6) atom to form distorted CuF6 octahedra that share corners with three equivalent Li(2)F4 tetrahedra. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), and one F(7) atom. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cu(1), and one Cu(2) atom. In the second F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cu(1), and one Cu(2) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), one Cu(1), and one Cu(2) atom. In the fourth F site, F(4) is bonded in a trigonal planar geometry to one Li(1), one Cu(1), and one Cu(2) atom. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Li(2), one Cu(1), and one Cu(2) atom. In the sixth F site, F(6) is bonded in a bent 120 degrees geometry to one Li(2) and one Cu(1) atom. In the seventh F site, F(7) is bonded in a bent 120 degrees geometry to one Li(2) and one Cu(2) atom. is represented by the CIF card [CIF]
data_Li2Cu2F7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.900
_cell_length_b   7.029
_cell_length_c   13.036
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   540.595
_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  0.408  0.257  0.048  1.0
  Li  Li1  1  0.336  0.754  0.188  1.0
  Li  Li2  1  0.836  0.254  0.312  1.0
  Li  Li3  1  0.908  0.757  0.452  1.0
  Li  Li4  1  0.092  0.257  0.548  1.0
  Li  Li5  1  0.164  0.754  0.688  1.0
  Li  Li6  1  0.664  0.254  0.812  1.0
  Li  Li7  1  0.592  0.757  0.952  1.0
  Cu  Cu8  1  0.852  0.523  0.103  1.0
  Cu  Cu9  1  0.870  0.996  0.105  1.0
  Cu  Cu10  1  0.370  0.496  0.395  1.0
  Cu  Cu11  1  0.352  0.023  0.397  1.0
  Cu  Cu12  1  0.648  0.523  0.603  1.0
  Cu  Cu13  1  0.630  0.996  0.605  1.0
  Cu  Cu14  1  0.130  0.496  0.895  1.0
  Cu  Cu15  1  0.148  0.023  0.897  1.0
  F  F16  1  0.183  0.450  0.036  1.0
  F  F17  1  0.204  0.053  0.041  1.0
  F  F18  1  0.595  0.724  0.102  1.0
  F  F19  1  0.720  0.250  0.094  1.0
  F  F20  1  0.032  0.758  0.120  1.0
  F  F21  1  0.914  0.475  0.238  1.0
  F  F22  1  0.906  0.030  0.241  1.0
  F  F23  1  0.406  0.530  0.259  1.0
  F  F24  1  0.414  0.975  0.262  1.0
  F  F25  1  0.532  0.258  0.380  1.0
  F  F26  1  0.220  0.750  0.406  1.0
  F  F27  1  0.095  0.224  0.398  1.0
  F  F28  1  0.704  0.553  0.459  1.0
  F  F29  1  0.683  0.950  0.464  1.0
  F  F30  1  0.317  0.450  0.536  1.0
  F  F31  1  0.296  0.053  0.541  1.0
  F  F32  1  0.905  0.724  0.602  1.0
  F  F33  1  0.780  0.250  0.594  1.0
  F  F34  1  0.468  0.758  0.620  1.0
  F  F35  1  0.586  0.475  0.738  1.0
  F  F36  1  0.594  0.030  0.741  1.0
  F  F37  1  0.094  0.530  0.759  1.0
  F  F38  1  0.086  0.975  0.762  1.0
  F  F39  1  0.968  0.258  0.880  1.0
  F  F40  1  0.280  0.750  0.906  1.0
  F  F41  1  0.405  0.224  0.898  1.0
  F  F42  1  0.796  0.553  0.959  1.0
  F  F43  1  0.817  0.950  0.964  1.0
[/CIF]
.