data_HCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.2
_cell_length_b   3.2
_cell_length_c   3.2
_cell_angle_alpha   58.43
_cell_angle_beta   58.43
_cell_angle_gamma   58.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HCl
_chemical_formula_sum   'H1 Cl1'
_cell_volume   22.33
_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
  H  H1  1  0.0  0.0  0.0  1.0
  Cl  Cl0  1  0.0  0.0  0.96  1.0

data_HCl
_symmetry_space_group_name_H-M   Imm2
_cell_length_a   3.12
_cell_length_b   4.47
_cell_length_c   3.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   44
_chemical_formula_structural   HCl
_chemical_formula_sum   'H2 Cl2'
_cell_volume   44.68
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, z'
  3  '-x, y, z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z+1/2'
  6  '-x+1/2, -y+1/2, z+1/2'
  7  '-x+1/2, y+1/2, z+1/2'
  8  'x+1/2, -y+1/2, z+1/2'
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
  H  H0  2  0.0  0.0  0.0  1.0
  Cl  Cl1  2  0.0  0.0  0.04  1.0

H Cl
HCl is alpha carbon monoxide-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two hydrogen hydrochloride molecules. H(1) is bonded in a single-bond geometry to one Cl(1) atom. The H(1)-Cl(1) bond length is 0.11 Å. Cl(1) is bonded in a single-bond geometry to one H(1) atom.