data_global
_chemical_name_mineral 'Fluorine'
loop_
_publ_author_name
'Jordan T H'
'Streib W E'
'Lipscomb W N'
_journal_name_full 'Journal of Chemical Physics'
_journal_volume 41 
_journal_year 1964
_journal_page_first 760
_journal_page_last 764
_publ_section_title
;
 Single-crystal X-ray diffraction study of beta-fluorine
 Note: T = 50 K
 Note: beta phase, stable between T = 45.55 K & 53.54 K
;
_database_code_amcsd 0012972
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'F'
_cell_length_a 6.67
_cell_length_b 6.67
_cell_length_c 6.67
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 296.741
_exptl_crystal_density_diffrn      0.851
_symmetry_space_group_name_H-M 'P m 3 n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'z,-x,y'
  '-y,z,-x'
  'x,-y,z'
  '-z,x,-y'
  'y,-z,x'
  '-x,y,-z'
  '1/2+x,1/2-z,1/2-y'
  '1/2-z,1/2+y,1/2+x'
  '1/2+y,1/2-x,1/2-z'
  '1/2-x,1/2+z,1/2+y'
  '1/2+z,1/2-y,1/2-x'
  '1/2-y,1/2+x,1/2+z'
  '1/2+x,1/2+z,1/2+y'
  '1/2-z,1/2-y,1/2-x'
  '1/2+y,1/2+x,1/2+z'
  '1/2-x,1/2-z,1/2-y'
  '1/2+z,1/2+y,1/2+x'
  '1/2-y,1/2-x,1/2-z'
  'z,x,-y'
  '-y,-z,x'
  'x,y,-z'
  '-z,-x,y'
  'y,z,-x'
  '-x,-y,z'
  '-z,x,y'
  'y,-z,-x'
  '-x,y,z'
  'z,-x,-y'
  '-y,z,x'
  'x,-y,-z'
  '1/2-x,1/2+z,1/2-y'
  '1/2+z,1/2-y,1/2+x'
  '1/2-y,1/2+x,1/2-z'
  '1/2+x,1/2-z,1/2+y'
  '1/2-z,1/2+y,1/2-x'
  '1/2+y,1/2-x,1/2+z'
  '1/2-x,1/2-z,1/2+y'
  '1/2+z,1/2+y,1/2-x'
  '1/2-y,1/2-x,1/2+z'
  '1/2+x,1/2+z,1/2-y'
  '1/2-z,1/2-y,1/2+x'
  '1/2+y,1/2+x,1/2-z'
  '-z,-x,-y'
  'y,z,x'
  '-x,-y,-z'
  'z,x,y'
  '-y,-z,-x'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
F1   0.00000   0.00000   0.00000
F2   0.25000   0.50000   0.00000