The structure described by MgCu6OF11 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one F(10), one F(4), one F(5), one F(7), and one F(8) atom to form MgF5 trigonal bipyramids that share  a cornercorner with one Cu(4)OF3 tetrahedra and corners with two equivalent Cu(6)F5 trigonal bipyramids. There are six inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 6-coordinate geometry to one F(1), one F(10), one F(11), one F(2), one F(3), and one F(9) atom. In the second Cu site, Cu(2) is bonded to one O(1), one F(1), one F(2), one F(3), and one F(9) atom to form distorted CuOF4 square pyramids that share  a cornercorner with one Cu(4)OF3 tetrahedra,  a cornercorner with one Cu(6)F5 trigonal bipyramid, and  an edgeedge with one Cu(4)OF3 tetrahedra. In the third Cu site, Cu(3) is bonded in a 5-coordinate geometry to one O(1), one F(2), one F(4), one F(5), and one F(6) atom. In the fourth Cu site, Cu(4) is bonded to one O(1), one F(2), one F(3), and one F(4) atom to form distorted CuOF3 tetrahedra that share  a cornercorner with one Cu(2)OF4 square pyramid,  a cornercorner with one Mg(1)F5 trigonal bipyramid, and  an edgeedge with one Cu(2)OF4 square pyramid. In the fifth Cu site, Cu(5) is bonded in a 5-coordinate geometry to one F(10), one F(6), one F(7), one F(8), and one F(9) atom. In the sixth Cu site, Cu(6) is bonded to one F(11), one F(6), one F(7), one F(8), and one F(9) atom to form CuF5 trigonal bipyramids that share  a cornercorner with one Cu(2)OF4 square pyramid and corners with two equivalent Mg(1)F5 trigonal bipyramids. O(1) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Cu(4) atom. There are eleven inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one Cu(2) atom. In the second F site, F(2) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one Cu(3), and one Cu(4) atom. In the third F site, F(3) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), and one Cu(4) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cu(3), and one Cu(4) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Mg(1) and one Cu(3) atom. In the sixth F site, F(6) is bonded in a distorted trigonal planar geometry to one Cu(3), one Cu(5), and one Cu(6) atom. In the seventh F site, F(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Cu(5), and one Cu(6) atom. In the eighth F site, F(8) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Cu(5), and one Cu(6) atom. In the ninth F site, F(9) is bonded in a distorted tetrahedral geometry to one Cu(1), one Cu(2), one Cu(5), and one Cu(6) atom. In the tenth F site, F(10) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cu(1), and one Cu(5) atom. In the eleventh F site, F(11) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(6) atom. is represented by the CIF file [CIF]
data_MgCu6OF11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.695
_cell_length_b   4.973
_cell_length_c   8.784
_cell_angle_alpha   91.085
_cell_angle_beta   91.079
_cell_angle_gamma   78.443
_symmetry_Int_Tables_number   1
_cell_volume   243.654
_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
  Mg  Mg0  1  0.787  0.282  0.569  1.0
  Cu  Cu1  1  0.018  0.039  0.979  1.0
  Cu  Cu2  1  0.434  0.518  0.101  1.0
  Cu  Cu3  1  0.345  0.995  0.333  1.0
  Cu  Cu4  1  0.874  0.568  0.275  1.0
  Cu  Cu5  1  0.191  0.508  0.670  1.0
  Cu  Cu6  1  0.552  0.842  0.757  1.0
  O  O7  1  0.569  0.727  0.238  1.0
  F  F8  1  0.254  0.231  0.067  1.0
  F  F9  1  0.119  0.770  0.226  1.0
  F  F10  1  0.770  0.296  0.075  1.0
  F  F11  1  0.055  0.268  0.410  1.0
  F  F12  1  0.577  0.212  0.407  1.0
  F  F13  1  0.344  0.783  0.584  1.0
  F  F14  1  0.842  0.679  0.599  1.0
  F  F15  1  0.524  0.279  0.713  1.0
  F  F16  1  0.289  0.749  0.902  1.0
  F  F17  1  0.031  0.218  0.731  1.0
  F  F18  1  0.790  0.826  0.911  1.0
[/CIF]
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The structure described by MgCu6OF11 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one F(10), one F(4), one F(5), one F(7), and one F(8) atom to form MgF5 trigonal bipyramids that share  a cornercorner with one Cu(4)OF3 tetrahedra and corners with two equivalent Cu(6)F5 trigonal bipyramids. There are six inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 6-coordinate geometry to one F(1), one F(10), one F(11), one F(2), one F(3), and one F(9) atom. In the second Cu site, Cu(2) is bonded to one O(1), one F(1), one F(2), one F(3), and one F(9) atom to form distorted CuOF4 square pyramids that share  a cornercorner with one Cu(4)OF3 tetrahedra,  a cornercorner with one Cu(6)F5 trigonal bipyramid, and  an edgeedge with one Cu(4)OF3 tetrahedra. In the third Cu site, Cu(3) is bonded in a 5-coordinate geometry to one O(1), one F(2), one F(4), one F(5), and one F(6) atom. In the fourth Cu site, Cu(4) is bonded to one O(1), one F(2), one F(3), and one F(4) atom to form distorted CuOF3 tetrahedra that share  a cornercorner with one Cu(2)OF4 square pyramid,  a cornercorner with one Mg(1)F5 trigonal bipyramid, and  an edgeedge with one Cu(2)OF4 square pyramid. In the fifth Cu site, Cu(5) is bonded in a 5-coordinate geometry to one F(10), one F(6), one F(7), one F(8), and one F(9) atom. In the sixth Cu site, Cu(6) is bonded to one F(11), one F(6), one F(7), one F(8), and one F(9) atom to form CuF5 trigonal bipyramids that share  a cornercorner with one Cu(2)OF4 square pyramid and corners with two equivalent Mg(1)F5 trigonal bipyramids. O(1) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Cu(4) atom. There are eleven inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one Cu(2) atom. In the second F site, F(2) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one Cu(3), and one Cu(4) atom. In the third F site, F(3) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), and one Cu(4) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cu(3), and one Cu(4) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Mg(1) and one Cu(3) atom. In the sixth F site, F(6) is bonded in a distorted trigonal planar geometry to one Cu(3), one Cu(5), and one Cu(6) atom. In the seventh F site, F(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Cu(5), and one Cu(6) atom. In the eighth F site, F(8) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Cu(5), and one Cu(6) atom. In the ninth F site, F(9) is bonded in a distorted tetrahedral geometry to one Cu(1), one Cu(2), one Cu(5), and one Cu(6) atom. In the tenth F site, F(10) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cu(1), and one Cu(5) atom. In the eleventh F site, F(11) is bonded in a bent 150 degrees geometry to one Cu(1) and one Cu(6) atom. is represented by the CIF file [CIF]
data_MgCu6OF11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.695
_cell_length_b   4.973
_cell_length_c   8.784
_cell_angle_alpha   91.085
_cell_angle_beta   91.079
_cell_angle_gamma   78.443
_symmetry_Int_Tables_number   1
_cell_volume   243.654
_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
  Mg  Mg0  1  0.787  0.282  0.569  1.0
  Cu  Cu1  1  0.018  0.039  0.979  1.0
  Cu  Cu2  1  0.434  0.518  0.101  1.0
  Cu  Cu3  1  0.345  0.995  0.333  1.0
  Cu  Cu4  1  0.874  0.568  0.275  1.0
  Cu  Cu5  1  0.191  0.508  0.670  1.0
  Cu  Cu6  1  0.552  0.842  0.757  1.0
  O  O7  1  0.569  0.727  0.238  1.0
  F  F8  1  0.254  0.231  0.067  1.0
  F  F9  1  0.119  0.770  0.226  1.0
  F  F10  1  0.770  0.296  0.075  1.0
  F  F11  1  0.055  0.268  0.410  1.0
  F  F12  1  0.577  0.212  0.407  1.0
  F  F13  1  0.344  0.783  0.584  1.0
  F  F14  1  0.842  0.679  0.599  1.0
  F  F15  1  0.524  0.279  0.713  1.0
  F  F16  1  0.289  0.749  0.902  1.0
  F  F17  1  0.031  0.218  0.731  1.0
  F  F18  1  0.790  0.826  0.911  1.0
[/CIF]
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