The material described by ErH2 crystallizes in the hexagonal P6_3/mmc space group. Er(1) is bonded in a 8-coordinate geometry to eight equivalent H(1) atoms. H(1) is bonded to four equivalent Er(1) atoms to form a mixture of face, corner, and edge-sharing HEr4 tetrahedra. is represented by the CIF file [CIF]
data_ErH2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.536
_cell_length_b   3.536
_cell_length_c   6.316
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   68.377
_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
  Er  Er0  1  0.333  0.667  0.250  1.0
  Er  Er1  1  0.667  0.333  0.750  1.0
  H  H2  1  0.333  0.667  0.906  1.0
  H  H3  1  0.667  0.333  0.094  1.0
  H  H4  1  0.667  0.333  0.406  1.0
  H  H5  1  0.333  0.667  0.594  1.0
[/CIF]
.
The material described by ErH2 crystallizes in the hexagonal P6_3/mmc space group. Er(1) is bonded in a 8-coordinate geometry to eight equivalent H(1) atoms. H(1) is bonded to four equivalent Er(1) atoms to form a mixture of face, corner, and edge-sharing HEr4 tetrahedra. is represented by the CIF file [CIF]
data_ErH2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.536
_cell_length_b   3.536
_cell_length_c   6.316
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   68.377
_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
  Er  Er0  1  0.333  0.667  0.250  1.0
  Er  Er1  1  0.667  0.333  0.750  1.0
  H  H2  1  0.333  0.667  0.906  1.0
  H  H3  1  0.667  0.333  0.094  1.0
  H  H4  1  0.667  0.333  0.406  1.0
  H  H5  1  0.333  0.667  0.594  1.0
[/CIF]
.