The compound described by Eu(ZnAs)2 crystallizes in the trigonal P-3m1 space group. Eu(1) is bonded to six equivalent As(1) atoms to form EuAs6 octahedra that share corners with twelve equivalent Zn(1)As4 tetrahedra, edges with six equivalent Eu(1)As6 octahedra, and edges with six equivalent Zn(1)As4 tetrahedra. Zn(1) is bonded to four equivalent As(1) atoms to form ZnAs4 tetrahedra that share corners with six equivalent Eu(1)As6 octahedra, corners with six equivalent Zn(1)As4 tetrahedra, edges with three equivalent Eu(1)As6 octahedra, and edges with three equivalent Zn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-52°. As(1) is bonded to three equivalent Eu(1) and four equivalent Zn(1) atoms to form a mixture of distorted corner and edge-sharing AsEu3Zn4 pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu(ZnAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.207
_cell_length_b   4.207
_cell_length_c   7.088
_cell_angle_alpha   90.000
_cell_angle_beta   90.002
_cell_angle_gamma   119.998
_symmetry_Int_Tables_number   1
_cell_volume   108.639
_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  0.000  0.000  0.000  1.0
  Zn  Zn1  1  0.667  0.333  0.368  1.0
  Zn  Zn2  1  0.333  0.667  0.632  1.0
  As  As3  1  0.667  0.333  0.733  1.0
  As  As4  1  0.333  0.667  0.267  1.0
[/CIF]
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The compound described by Eu(ZnAs)2 crystallizes in the trigonal P-3m1 space group. Eu(1) is bonded to six equivalent As(1) atoms to form EuAs6 octahedra that share corners with twelve equivalent Zn(1)As4 tetrahedra, edges with six equivalent Eu(1)As6 octahedra, and edges with six equivalent Zn(1)As4 tetrahedra. Zn(1) is bonded to four equivalent As(1) atoms to form ZnAs4 tetrahedra that share corners with six equivalent Eu(1)As6 octahedra, corners with six equivalent Zn(1)As4 tetrahedra, edges with three equivalent Eu(1)As6 octahedra, and edges with three equivalent Zn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-52°. As(1) is bonded to three equivalent Eu(1) and four equivalent Zn(1) atoms to form a mixture of distorted corner and edge-sharing AsEu3Zn4 pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu(ZnAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.207
_cell_length_b   4.207
_cell_length_c   7.088
_cell_angle_alpha   90.000
_cell_angle_beta   90.002
_cell_angle_gamma   119.998
_symmetry_Int_Tables_number   1
_cell_volume   108.639
_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  0.000  0.000  0.000  1.0
  Zn  Zn1  1  0.667  0.333  0.368  1.0
  Zn  Zn2  1  0.333  0.667  0.632  1.0
  As  As3  1  0.667  0.333  0.733  1.0
  As  As4  1  0.333  0.667  0.267  1.0
[/CIF]
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