The compound described by EuAs crystallizes in the hexagonal P-62m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. In the second Eu site, Eu(2) is bonded in a 6-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. There are two inequivalent As sites. In the first As site, As(2) is bonded to three equivalent Eu(1) and three equivalent Eu(2) atoms to form a mixture of distorted edge, corner, and face-sharing AsEu6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the second As site, As(1) is bonded in a 7-coordinate geometry to three equivalent Eu(1), three equivalent Eu(2), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.619
_cell_length_b   4.619
_cell_length_c   6.209
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   114.719
_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
  As  As0  1  0.000  0.000  0.246  1.0
  As  As1  1  0.000  0.000  0.754  1.0
  Eu  Eu2  1  0.333  0.667  0.500  1.0
  Eu  Eu3  1  0.667  0.333  0.000  1.0
[/CIF]
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The compound described by EuAs crystallizes in the hexagonal P-62m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. In the second Eu site, Eu(2) is bonded in a 6-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. There are two inequivalent As sites. In the first As site, As(2) is bonded to three equivalent Eu(1) and three equivalent Eu(2) atoms to form a mixture of distorted edge, corner, and face-sharing AsEu6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the second As site, As(1) is bonded in a 7-coordinate geometry to three equivalent Eu(1), three equivalent Eu(2), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.619
_cell_length_b   4.619
_cell_length_c   6.209
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   114.719
_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
  As  As0  1  0.000  0.000  0.246  1.0
  As  As1  1  0.000  0.000  0.754  1.0
  Eu  Eu2  1  0.333  0.667  0.500  1.0
  Eu  Eu3  1  0.667  0.333  0.000  1.0
[/CIF]
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