The material structure described by Eu11(ZnAs2)6 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic C2/m space group. There are six inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 12-coordinate geometry to two equivalent Zn(2), two equivalent Zn(3), one As(1), one As(2), two equivalent As(4), and four equivalent As(5) atoms. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one Zn(1), one As(1), one As(2), two equivalent As(3), and two equivalent As(5) atoms. In the third Eu site, Eu(3) is bonded to one As(1), one As(2), two equivalent As(4), and two equivalent As(6) atoms to form a mixture of distorted corner, edge, and face-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the fourth Eu site, Eu(4) is bonded in a 6-coordinate geometry to one As(1), two equivalent As(6), and three equivalent As(3) atoms. In the fifth Eu site, Eu(5) is bonded in a 7-coordinate geometry to two equivalent Zn(1), two equivalent As(2), and three equivalent As(6) atoms. In the sixth Eu site, Eu(6) is bonded to two equivalent As(1) and four equivalent As(4) atoms to form a mixture of distorted corner, edge, and face-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one Eu(2), two equivalent Eu(5), one As(2), one As(6), and two equivalent As(3) atoms. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to two equivalent Eu(1), one As(4), one As(5), and two equivalent As(2) atoms. In the third Zn site, Zn(3) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1), one As(4), and two equivalent As(1) atoms. There are six inequivalent As sites. In the first As site, As(1) is bonded in a 6-coordinate geometry to one Eu(1), one Eu(2), one Eu(3), one Eu(4), one Eu(6), and two equivalent Zn(3) atoms. In the second As site, As(2) is bonded in a 7-coordinate geometry to one Eu(1), one Eu(2), one Eu(3), two equivalent Eu(5), one Zn(1), and two equivalent Zn(2) atoms. In the third As site, As(3) is bonded in a 7-coordinate geometry to two equivalent Eu(2), three equivalent Eu(4), and two equivalent Zn(1) atoms. In the fourth As site, As(4) is bonded in a 8-coordinate geometry to two equivalent Eu(1), two equivalent Eu(3), two equivalent Eu(6), one Zn(2), and one Zn(3) atom. In the fifth As site, As(5) is bonded in a 8-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), one Zn(2), and one As(5) atom. In the sixth As site, As(6) is bonded in a 8-coordinate geometry to two equivalent Eu(3), two equivalent Eu(4), three equivalent Eu(5), and one Zn(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu11(ZnAs2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.213
_cell_length_b   15.213
_cell_length_c   11.671
_cell_angle_alpha   70.461
_cell_angle_beta   70.461
_cell_angle_gamma   16.286
_symmetry_Int_Tables_number   1
_cell_volume   712.948
_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
  Eu  Eu0  1  0.017  0.017  0.322  1.0
  Eu  Eu1  1  0.983  0.983  0.678  1.0
  Eu  Eu2  1  0.113  0.113  0.488  1.0
  Eu  Eu3  1  0.887  0.887  0.512  1.0
  Eu  Eu4  1  0.126  0.126  0.979  1.0
  Eu  Eu5  1  0.874  0.874  0.021  1.0
  Eu  Eu6  1  0.199  0.199  0.652  1.0
  Eu  Eu7  1  0.801  0.801  0.348  1.0
  Eu  Eu8  1  0.282  0.282  0.864  1.0
  Eu  Eu9  1  0.718  0.718  0.136  1.0
  Eu  Eu10  1  0.000  0.000  0.000  1.0
  Zn  Zn11  1  0.219  0.219  0.331  1.0
  Zn  Zn12  1  0.781  0.781  0.669  1.0
  Zn  Zn13  1  0.401  0.401  0.751  1.0
  Zn  Zn14  1  0.599  0.599  0.249  1.0
  Zn  Zn15  1  0.548  0.548  0.764  1.0
  Zn  Zn16  1  0.452  0.452  0.236  1.0
  As  As17  1  0.086  0.086  0.762  1.0
  As  As18  1  0.914  0.914  0.238  1.0
  As  As19  1  0.145  0.145  0.217  1.0
  As  As20  1  0.855  0.855  0.783  1.0
  As  As21  1  0.307  0.307  0.546  1.0
  As  As22  1  0.693  0.693  0.454  1.0
  As  As23  1  0.455  0.455  0.879  1.0
  As  As24  1  0.545  0.545  0.121  1.0
  As  As25  1  0.458  0.458  0.510  1.0
  As  As26  1  0.542  0.542  0.490  1.0
  As  As27  1  0.708  0.708  0.854  1.0
  As  As28  1  0.292  0.292  0.146  1.0
[/CIF]
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The material structure described by Eu11(ZnAs2)6 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic C2/m space group. There are six inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 12-coordinate geometry to two equivalent Zn(2), two equivalent Zn(3), one As(1), one As(2), two equivalent As(4), and four equivalent As(5) atoms. In the second Eu site, Eu(2) is bonded in a 7-coordinate geometry to one Zn(1), one As(1), one As(2), two equivalent As(3), and two equivalent As(5) atoms. In the third Eu site, Eu(3) is bonded to one As(1), one As(2), two equivalent As(4), and two equivalent As(6) atoms to form a mixture of distorted corner, edge, and face-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles are 54°. In the fourth Eu site, Eu(4) is bonded in a 6-coordinate geometry to one As(1), two equivalent As(6), and three equivalent As(3) atoms. In the fifth Eu site, Eu(5) is bonded in a 7-coordinate geometry to two equivalent Zn(1), two equivalent As(2), and three equivalent As(6) atoms. In the sixth Eu site, Eu(6) is bonded to two equivalent As(1) and four equivalent As(4) atoms to form a mixture of distorted corner, edge, and face-sharing EuAs6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one Eu(2), two equivalent Eu(5), one As(2), one As(6), and two equivalent As(3) atoms. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to two equivalent Eu(1), one As(4), one As(5), and two equivalent As(2) atoms. In the third Zn site, Zn(3) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1), one As(4), and two equivalent As(1) atoms. There are six inequivalent As sites. In the first As site, As(1) is bonded in a 6-coordinate geometry to one Eu(1), one Eu(2), one Eu(3), one Eu(4), one Eu(6), and two equivalent Zn(3) atoms. In the second As site, As(2) is bonded in a 7-coordinate geometry to one Eu(1), one Eu(2), one Eu(3), two equivalent Eu(5), one Zn(1), and two equivalent Zn(2) atoms. In the third As site, As(3) is bonded in a 7-coordinate geometry to two equivalent Eu(2), three equivalent Eu(4), and two equivalent Zn(1) atoms. In the fourth As site, As(4) is bonded in a 8-coordinate geometry to two equivalent Eu(1), two equivalent Eu(3), two equivalent Eu(6), one Zn(2), and one Zn(3) atom. In the fifth As site, As(5) is bonded in a 8-coordinate geometry to two equivalent Eu(2), four equivalent Eu(1), one Zn(2), and one As(5) atom. In the sixth As site, As(6) is bonded in a 8-coordinate geometry to two equivalent Eu(3), two equivalent Eu(4), three equivalent Eu(5), and one Zn(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu11(ZnAs2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.213
_cell_length_b   15.213
_cell_length_c   11.671
_cell_angle_alpha   70.461
_cell_angle_beta   70.461
_cell_angle_gamma   16.286
_symmetry_Int_Tables_number   1
_cell_volume   712.948
_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
  Eu  Eu0  1  0.017  0.017  0.322  1.0
  Eu  Eu1  1  0.983  0.983  0.678  1.0
  Eu  Eu2  1  0.113  0.113  0.488  1.0
  Eu  Eu3  1  0.887  0.887  0.512  1.0
  Eu  Eu4  1  0.126  0.126  0.979  1.0
  Eu  Eu5  1  0.874  0.874  0.021  1.0
  Eu  Eu6  1  0.199  0.199  0.652  1.0
  Eu  Eu7  1  0.801  0.801  0.348  1.0
  Eu  Eu8  1  0.282  0.282  0.864  1.0
  Eu  Eu9  1  0.718  0.718  0.136  1.0
  Eu  Eu10  1  0.000  0.000  0.000  1.0
  Zn  Zn11  1  0.219  0.219  0.331  1.0
  Zn  Zn12  1  0.781  0.781  0.669  1.0
  Zn  Zn13  1  0.401  0.401  0.751  1.0
  Zn  Zn14  1  0.599  0.599  0.249  1.0
  Zn  Zn15  1  0.548  0.548  0.764  1.0
  Zn  Zn16  1  0.452  0.452  0.236  1.0
  As  As17  1  0.086  0.086  0.762  1.0
  As  As18  1  0.914  0.914  0.238  1.0
  As  As19  1  0.145  0.145  0.217  1.0
  As  As20  1  0.855  0.855  0.783  1.0
  As  As21  1  0.307  0.307  0.546  1.0
  As  As22  1  0.693  0.693  0.454  1.0
  As  As23  1  0.455  0.455  0.879  1.0
  As  As24  1  0.545  0.545  0.121  1.0
  As  As25  1  0.458  0.458  0.510  1.0
  As  As26  1  0.542  0.542  0.490  1.0
  As  As27  1  0.708  0.708  0.854  1.0
  As  As28  1  0.292  0.292  0.146  1.0
[/CIF]
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