The crystal structure described by EuZn11 crystallizes in the monoclinic C2/m space group. Eu(1) is bonded in a 18-coordinate geometry to two equivalent Zn(1), four equivalent Zn(5), four equivalent Zn(6), four equivalent Zn(7), and four equivalent Zn(8) atoms. There are eight inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 14-coordinate geometry to two equivalent Eu(1), one Zn(2), one Zn(4), two equivalent Zn(3), two equivalent Zn(5), two equivalent Zn(6), two equivalent Zn(7), and two equivalent Zn(8) atoms. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to two equivalent Zn(1), four equivalent Zn(5), and four equivalent Zn(6) atoms. In the third Zn site, Zn(3) is bonded in a 10-coordinate geometry to two equivalent Zn(1), two equivalent Zn(5), two equivalent Zn(6), two equivalent Zn(7), and two equivalent Zn(8) atoms. In the fourth Zn site, Zn(4) is bonded in a 10-coordinate geometry to two equivalent Zn(1), four equivalent Zn(7), and four equivalent Zn(8) atoms. In the fifth Zn site, Zn(5) is bonded to two equivalent Eu(1), one Zn(1), one Zn(2), one Zn(3), one Zn(5), two equivalent Zn(6), two equivalent Zn(7), and two equivalent Zn(8) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. In the sixth Zn site, Zn(6) is bonded to two equivalent Eu(1), one Zn(1), one Zn(2), one Zn(3), one Zn(8), two equivalent Zn(5), two equivalent Zn(6), and two equivalent Zn(7) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. In the seventh Zn site, Zn(7) is bonded to two equivalent Eu(1), one Zn(1), one Zn(3), one Zn(4), one Zn(7), two equivalent Zn(5), two equivalent Zn(6), and two equivalent Zn(8) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. In the eighth Zn site, Zn(8) is bonded to two equivalent Eu(1), one Zn(1), one Zn(3), one Zn(4), one Zn(6), two equivalent Zn(5), two equivalent Zn(7), and two equivalent Zn(8) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. is represented by the CIF file [CIF]
data_EuZn11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.772
_cell_length_b   8.183
_cell_length_c   8.183
_cell_angle_alpha   80.254
_cell_angle_beta   65.604
_cell_angle_gamma   65.604
_symmetry_Int_Tables_number   1
_cell_volume   376.106
_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
  Eu  Eu0  1  0.375  0.250  0.750  1.0
  Eu  Eu1  1  0.625  0.750  0.250  1.0
  Zn  Zn2  1  0.125  0.750  0.250  1.0
  Zn  Zn3  1  0.875  0.250  0.750  1.0
  Zn  Zn4  1  0.500  0.500  0.000  1.0
  Zn  Zn5  1  0.000  0.500  0.500  1.0
  Zn  Zn6  1  0.000  0.000  0.000  1.0
  Zn  Zn7  1  0.000  0.000  0.500  1.0
  Zn  Zn8  1  0.557  0.578  0.666  1.0
  Zn  Zn9  1  0.557  0.166  0.078  1.0
  Zn  Zn10  1  0.135  0.422  0.166  1.0
  Zn  Zn11  1  0.135  0.666  0.922  1.0
  Zn  Zn12  1  0.801  0.334  0.422  1.0
  Zn  Zn13  1  0.801  0.922  0.834  1.0
  Zn  Zn14  1  0.723  0.834  0.578  1.0
  Zn  Zn15  1  0.723  0.078  0.334  1.0
  Zn  Zn16  1  0.443  0.422  0.334  1.0
  Zn  Zn17  1  0.443  0.834  0.922  1.0
  Zn  Zn18  1  0.865  0.578  0.834  1.0
  Zn  Zn19  1  0.865  0.334  0.078  1.0
  Zn  Zn20  1  0.199  0.666  0.578  1.0
  Zn  Zn21  1  0.199  0.078  0.166  1.0
  Zn  Zn22  1  0.277  0.166  0.422  1.0
  Zn  Zn23  1  0.277  0.922  0.666  1.0
[/CIF]
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The crystal structure described by EuZn11 crystallizes in the monoclinic C2/m space group. Eu(1) is bonded in a 18-coordinate geometry to two equivalent Zn(1), four equivalent Zn(5), four equivalent Zn(6), four equivalent Zn(7), and four equivalent Zn(8) atoms. There are eight inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 14-coordinate geometry to two equivalent Eu(1), one Zn(2), one Zn(4), two equivalent Zn(3), two equivalent Zn(5), two equivalent Zn(6), two equivalent Zn(7), and two equivalent Zn(8) atoms. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to two equivalent Zn(1), four equivalent Zn(5), and four equivalent Zn(6) atoms. In the third Zn site, Zn(3) is bonded in a 10-coordinate geometry to two equivalent Zn(1), two equivalent Zn(5), two equivalent Zn(6), two equivalent Zn(7), and two equivalent Zn(8) atoms. In the fourth Zn site, Zn(4) is bonded in a 10-coordinate geometry to two equivalent Zn(1), four equivalent Zn(7), and four equivalent Zn(8) atoms. In the fifth Zn site, Zn(5) is bonded to two equivalent Eu(1), one Zn(1), one Zn(2), one Zn(3), one Zn(5), two equivalent Zn(6), two equivalent Zn(7), and two equivalent Zn(8) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. In the sixth Zn site, Zn(6) is bonded to two equivalent Eu(1), one Zn(1), one Zn(2), one Zn(3), one Zn(8), two equivalent Zn(5), two equivalent Zn(6), and two equivalent Zn(7) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. In the seventh Zn site, Zn(7) is bonded to two equivalent Eu(1), one Zn(1), one Zn(3), one Zn(4), one Zn(7), two equivalent Zn(5), two equivalent Zn(6), and two equivalent Zn(8) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. In the eighth Zn site, Zn(8) is bonded to two equivalent Eu(1), one Zn(1), one Zn(3), one Zn(4), one Zn(6), two equivalent Zn(5), two equivalent Zn(7), and two equivalent Zn(8) atoms to form a mixture of distorted corner, edge, and face-sharing ZnEu2Zn10 cuboctahedra. is represented by the CIF file [CIF]
data_EuZn11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.772
_cell_length_b   8.183
_cell_length_c   8.183
_cell_angle_alpha   80.254
_cell_angle_beta   65.604
_cell_angle_gamma   65.604
_symmetry_Int_Tables_number   1
_cell_volume   376.106
_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
  Eu  Eu0  1  0.375  0.250  0.750  1.0
  Eu  Eu1  1  0.625  0.750  0.250  1.0
  Zn  Zn2  1  0.125  0.750  0.250  1.0
  Zn  Zn3  1  0.875  0.250  0.750  1.0
  Zn  Zn4  1  0.500  0.500  0.000  1.0
  Zn  Zn5  1  0.000  0.500  0.500  1.0
  Zn  Zn6  1  0.000  0.000  0.000  1.0
  Zn  Zn7  1  0.000  0.000  0.500  1.0
  Zn  Zn8  1  0.557  0.578  0.666  1.0
  Zn  Zn9  1  0.557  0.166  0.078  1.0
  Zn  Zn10  1  0.135  0.422  0.166  1.0
  Zn  Zn11  1  0.135  0.666  0.922  1.0
  Zn  Zn12  1  0.801  0.334  0.422  1.0
  Zn  Zn13  1  0.801  0.922  0.834  1.0
  Zn  Zn14  1  0.723  0.834  0.578  1.0
  Zn  Zn15  1  0.723  0.078  0.334  1.0
  Zn  Zn16  1  0.443  0.422  0.334  1.0
  Zn  Zn17  1  0.443  0.834  0.922  1.0
  Zn  Zn18  1  0.865  0.578  0.834  1.0
  Zn  Zn19  1  0.865  0.334  0.078  1.0
  Zn  Zn20  1  0.199  0.666  0.578  1.0
  Zn  Zn21  1  0.199  0.078  0.166  1.0
  Zn  Zn22  1  0.277  0.166  0.422  1.0
  Zn  Zn23  1  0.277  0.922  0.666  1.0
[/CIF]
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