The crystal structure described by Li2Cu7F16 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a 5-coordinate geometry to one F(1), one F(3), one F(8), and two equivalent F(4) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 7-coordinate geometry to one F(1), one F(4), one F(5), one F(6), one F(8), and two equivalent F(2) atoms. 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(8), and two equivalent F(5) atoms. In the third Cu site, Cu(3) is bonded in a 6-coordinate geometry to one F(1), one F(5), one F(7), one F(8), and two equivalent F(6) atoms. In the fourth Cu site, Cu(4) is bonded in a distorted octahedral geometry to two equivalent F(3), two equivalent F(4), and two equivalent F(7) atoms. There are eight inequivalent F sites. In the first F site, F(1) is bonded to one Li(1), one Cu(1), one Cu(2), and one Cu(3) atom to form FLiCu3 tetrahedra that share corners with four equivalent F(8)LiCu3 tetrahedra,  a cornercorner with one F(4)Li2Cu2 trigonal pyramid, and  an edgeedge with one F(4)Li2Cu2 trigonal pyramid. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Cu(2) and two equivalent Cu(1) atoms. In the third F site, F(3) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cu(2), and one Cu(4) atom. In the fourth F site, F(4) is bonded to two equivalent Li(1), one Cu(1), and one Cu(4) atom to form distorted FLi2Cu2 trigonal pyramids that share  a cornercorner with one F(1)LiCu3 tetrahedra,  a cornercorner with one F(8)LiCu3 tetrahedra,  a cornercorner with one F(4)Li2Cu2 trigonal pyramid,  an edgeedge with one F(1)LiCu3 tetrahedra,  an edgeedge with one F(8)LiCu3 tetrahedra, and  an edgeedge with one F(4)Li2Cu2 trigonal pyramid. In the fifth F site, F(5) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(3), and two equivalent Cu(2) atoms. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Cu(1) and two equivalent Cu(3) atoms. In the seventh F site, F(7) is bonded in a distorted bent 120 degrees geometry to one Cu(3) and one Cu(4) atom. In the eighth F site, F(8) is bonded to one Li(1), one Cu(1), one Cu(2), and one Cu(3) atom to form distorted FLiCu3 tetrahedra that share corners with four equivalent F(1)LiCu3 tetrahedra,  a cornercorner with one F(4)Li2Cu2 trigonal pyramid, and  an edgeedge with one F(4)Li2Cu2 trigonal pyramid. is represented by the CIF file [CIF]
data_Li2Cu7F16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.379
_cell_length_b   6.389
_cell_length_c   8.889
_cell_angle_alpha   90.440
_cell_angle_beta   110.175
_cell_angle_gamma   119.417
_symmetry_Int_Tables_number   1
_cell_volume   289.195
_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  0.302  0.639  0.990  1.0
  Li  Li1  1  0.698  0.361  0.010  1.0
  Cu  Cu2  1  0.753  0.236  0.658  1.0
  Cu  Cu3  1  0.420  0.523  0.661  1.0
  Cu  Cu4  1  0.871  0.105  0.343  1.0
  Cu  Cu5  1  0.000  0.000  0.000  1.0
  Cu  Cu6  1  0.129  0.895  0.657  1.0
  Cu  Cu7  1  0.580  0.477  0.339  1.0
  Cu  Cu8  1  0.247  0.764  0.342  1.0
  F  F9  1  0.171  0.588  0.750  1.0
  F  F10  1  0.554  0.177  0.419  1.0
  F  F11  1  0.659  0.658  0.888  1.0
  F  F12  1  0.891  0.246  0.888  1.0
  F  F13  1  0.244  0.380  0.420  1.0
  F  F14  1  0.957  0.137  0.582  1.0
  F  F15  1  0.793  0.009  0.116  1.0
  F  F16  1  0.462  0.232  0.706  1.0
  F  F17  1  0.538  0.768  0.294  1.0
  F  F18  1  0.207  0.991  0.884  1.0
  F  F19  1  0.043  0.863  0.418  1.0
  F  F20  1  0.756  0.620  0.580  1.0
  F  F21  1  0.109  0.754  0.112  1.0
  F  F22  1  0.341  0.342  0.112  1.0
  F  F23  1  0.446  0.823  0.581  1.0
  F  F24  1  0.829  0.412  0.250  1.0
[/CIF]
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The crystal structure described by Li2Cu7F16 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a 5-coordinate geometry to one F(1), one F(3), one F(8), and two equivalent F(4) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 7-coordinate geometry to one F(1), one F(4), one F(5), one F(6), one F(8), and two equivalent F(2) atoms. 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(8), and two equivalent F(5) atoms. In the third Cu site, Cu(3) is bonded in a 6-coordinate geometry to one F(1), one F(5), one F(7), one F(8), and two equivalent F(6) atoms. In the fourth Cu site, Cu(4) is bonded in a distorted octahedral geometry to two equivalent F(3), two equivalent F(4), and two equivalent F(7) atoms. There are eight inequivalent F sites. In the first F site, F(1) is bonded to one Li(1), one Cu(1), one Cu(2), and one Cu(3) atom to form FLiCu3 tetrahedra that share corners with four equivalent F(8)LiCu3 tetrahedra,  a cornercorner with one F(4)Li2Cu2 trigonal pyramid, and  an edgeedge with one F(4)Li2Cu2 trigonal pyramid. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Cu(2) and two equivalent Cu(1) atoms. In the third F site, F(3) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cu(2), and one Cu(4) atom. In the fourth F site, F(4) is bonded to two equivalent Li(1), one Cu(1), and one Cu(4) atom to form distorted FLi2Cu2 trigonal pyramids that share  a cornercorner with one F(1)LiCu3 tetrahedra,  a cornercorner with one F(8)LiCu3 tetrahedra,  a cornercorner with one F(4)Li2Cu2 trigonal pyramid,  an edgeedge with one F(1)LiCu3 tetrahedra,  an edgeedge with one F(8)LiCu3 tetrahedra, and  an edgeedge with one F(4)Li2Cu2 trigonal pyramid. In the fifth F site, F(5) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(3), and two equivalent Cu(2) atoms. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Cu(1) and two equivalent Cu(3) atoms. In the seventh F site, F(7) is bonded in a distorted bent 120 degrees geometry to one Cu(3) and one Cu(4) atom. In the eighth F site, F(8) is bonded to one Li(1), one Cu(1), one Cu(2), and one Cu(3) atom to form distorted FLiCu3 tetrahedra that share corners with four equivalent F(1)LiCu3 tetrahedra,  a cornercorner with one F(4)Li2Cu2 trigonal pyramid, and  an edgeedge with one F(4)Li2Cu2 trigonal pyramid. is represented by the CIF file [CIF]
data_Li2Cu7F16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.379
_cell_length_b   6.389
_cell_length_c   8.889
_cell_angle_alpha   90.440
_cell_angle_beta   110.175
_cell_angle_gamma   119.417
_symmetry_Int_Tables_number   1
_cell_volume   289.195
_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  0.302  0.639  0.990  1.0
  Li  Li1  1  0.698  0.361  0.010  1.0
  Cu  Cu2  1  0.753  0.236  0.658  1.0
  Cu  Cu3  1  0.420  0.523  0.661  1.0
  Cu  Cu4  1  0.871  0.105  0.343  1.0
  Cu  Cu5  1  0.000  0.000  0.000  1.0
  Cu  Cu6  1  0.129  0.895  0.657  1.0
  Cu  Cu7  1  0.580  0.477  0.339  1.0
  Cu  Cu8  1  0.247  0.764  0.342  1.0
  F  F9  1  0.171  0.588  0.750  1.0
  F  F10  1  0.554  0.177  0.419  1.0
  F  F11  1  0.659  0.658  0.888  1.0
  F  F12  1  0.891  0.246  0.888  1.0
  F  F13  1  0.244  0.380  0.420  1.0
  F  F14  1  0.957  0.137  0.582  1.0
  F  F15  1  0.793  0.009  0.116  1.0
  F  F16  1  0.462  0.232  0.706  1.0
  F  F17  1  0.538  0.768  0.294  1.0
  F  F18  1  0.207  0.991  0.884  1.0
  F  F19  1  0.043  0.863  0.418  1.0
  F  F20  1  0.756  0.620  0.580  1.0
  F  F21  1  0.109  0.754  0.112  1.0
  F  F22  1  0.341  0.342  0.112  1.0
  F  F23  1  0.446  0.823  0.581  1.0
  F  F24  1  0.829  0.412  0.250  1.0
[/CIF]
.