data_global
_chemical_name_mineral 'Hydrogen'
loop_
_publ_author_name
'Ishmaev S N'
'Sadikov I P'
'Chernyshev A A'
'Vindryevsky B A'
'Sukhoparov V A'
'Telepnev A S'
'Kobelyev G V'
_journal_name_full 'Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki'
_journal_volume 84 
_journal_year 1983
_journal_page_first 394
_journal_page_last 403
_publ_section_title
;
 Neutron structural investigations of solid para-hydrogen at pressures
 up to 24 kbar
 Sample: at P = 1.38 GPa & T = 16.2 K
 Note: known as para-hydrogen
;
_database_code_amcsd 0015890
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'H'
_cell_length_a 2.979
_cell_length_b 2.979
_cell_length_c 4.853
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 37.298
_exptl_crystal_density_diffrn      0.179
_symmetry_space_group_name_H-M 'P 63/m m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x,x-y,1/2-z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x+y,y,1/2-z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x,-x+y,-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
  'x-y,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
H   0.33333   0.66667   0.12300