The compound described by Eu2H3Cl crystallizes in the trigonal P-3m1 space group. Eu(1) is bonded in a 10-coordinate geometry to three equivalent H(2), four equivalent H(1), and three equivalent Cl(1) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded to four equivalent Eu(1) atoms to form HEu4 trigonal pyramids that share corners with three equivalent H(2)Eu6 octahedra, corners with six equivalent Cl(1)Eu6 octahedra, corners with six equivalent H(1)Eu4 trigonal pyramids, edges with three equivalent Cl(1)Eu6 octahedra, edges with three equivalent H(1)Eu4 trigonal pyramids, and faces with three equivalent H(2)Eu6 octahedra. The corner-sharing octahedral tilt angles range from 33-49°. In the second H site, H(2) is bonded to six equivalent Eu(1) atoms to form HEu6 octahedra that share corners with twelve equivalent Cl(1)Eu6 octahedra, corners with six equivalent H(1)Eu4 trigonal pyramids, edges with six equivalent H(2)Eu6 octahedra, faces with two equivalent Cl(1)Eu6 octahedra, and faces with six equivalent H(1)Eu4 trigonal pyramids. The corner-sharing octahedral tilt angles are 49°. Cl(1) is bonded to six equivalent Eu(1) atoms to form ClEu6 octahedra that share corners with twelve equivalent H(2)Eu6 octahedra, corners with twelve equivalent H(1)Eu4 trigonal pyramids, edges with six equivalent Cl(1)Eu6 octahedra, edges with six equivalent H(1)Eu4 trigonal pyramids, and faces with two equivalent H(2)Eu6 octahedra. The corner-sharing octahedral tilt angles are 49°. is represented by the CIF card [CIF]
data_Eu2H3Cl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.032
_cell_length_b   4.032
_cell_length_c   6.755
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   95.094
_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  0.667  0.333  0.701  1.0
  Eu  Eu1  1  0.333  0.667  0.299  1.0
  H  H2  1  0.667  0.333  0.346  1.0
  H  H3  1  0.333  0.667  0.654  1.0
  H  H4  1  0.000  0.000  0.500  1.0
  Cl  Cl5  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by Eu2H3Cl crystallizes in the trigonal P-3m1 space group. Eu(1) is bonded in a 10-coordinate geometry to three equivalent H(2), four equivalent H(1), and three equivalent Cl(1) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded to four equivalent Eu(1) atoms to form HEu4 trigonal pyramids that share corners with three equivalent H(2)Eu6 octahedra, corners with six equivalent Cl(1)Eu6 octahedra, corners with six equivalent H(1)Eu4 trigonal pyramids, edges with three equivalent Cl(1)Eu6 octahedra, edges with three equivalent H(1)Eu4 trigonal pyramids, and faces with three equivalent H(2)Eu6 octahedra. The corner-sharing octahedral tilt angles range from 33-49°. In the second H site, H(2) is bonded to six equivalent Eu(1) atoms to form HEu6 octahedra that share corners with twelve equivalent Cl(1)Eu6 octahedra, corners with six equivalent H(1)Eu4 trigonal pyramids, edges with six equivalent H(2)Eu6 octahedra, faces with two equivalent Cl(1)Eu6 octahedra, and faces with six equivalent H(1)Eu4 trigonal pyramids. The corner-sharing octahedral tilt angles are 49°. Cl(1) is bonded to six equivalent Eu(1) atoms to form ClEu6 octahedra that share corners with twelve equivalent H(2)Eu6 octahedra, corners with twelve equivalent H(1)Eu4 trigonal pyramids, edges with six equivalent Cl(1)Eu6 octahedra, edges with six equivalent H(1)Eu4 trigonal pyramids, and faces with two equivalent H(2)Eu6 octahedra. The corner-sharing octahedral tilt angles are 49°. is represented by the CIF card [CIF]
data_Eu2H3Cl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.032
_cell_length_b   4.032
_cell_length_c   6.755
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   95.094
_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  0.667  0.333  0.701  1.0
  Eu  Eu1  1  0.333  0.667  0.299  1.0
  H  H2  1  0.667  0.333  0.346  1.0
  H  H3  1  0.333  0.667  0.654  1.0
  H  H4  1  0.000  0.000  0.500  1.0
  Cl  Cl5  1  0.000  0.000  0.000  1.0
[/CIF]
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