The material structure described by He is Magnesium structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is zero-dimensional and consists of two 7440-59-7 atoms. He(1) is bonded in a 1-coordinate geometry to  atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_He
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.842
_cell_length_b   2.842
_cell_length_c   4.625
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   32.361
_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
  He  He0  1  0.333  0.667  0.250  1.0
  He  He1  1  0.667  0.333  0.750  1.0
[/CIF]
.
The material structure described by He is Magnesium structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is zero-dimensional and consists of two 7440-59-7 atoms. He(1) is bonded in a 1-coordinate geometry to  atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_He
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.842
_cell_length_b   2.842
_cell_length_c   4.625
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   32.361
_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
  He  He0  1  0.333  0.667  0.250  1.0
  He  He1  1  0.667  0.333  0.750  1.0
[/CIF]
.