# beta-F (cP16, cp-lattice of rotationally disordered diatomic molecules)
# Original source: American Mineralogist Crystal Structure Database
data_nolabel
loop_
_publ_author_name
'Jordan, T. H.'
'Streib, W. E.'
'Lipscomb, W. N.'
_publ_section_title
;
 Single-crystal X-ray diffraction study of beta-fluorine
 Locality: synthetic
 Note: beta phase, stable between T = 45.55 K & 53.54 K
;
_journal_name_full               'Journal of Chemical Physics'
_journal_volume                  41
_journal_page_first              760
_journal_year                    1964
_chemical_formula_sum            F2
_chemical_name_mineral           Fluorine
_space_group_IT_number           223
_symmetry_space_group_name_H-M   'P m -3 n'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   6.67
_cell_length_b                   6.67
_cell_length_c                   6.67
_diffrn_ambient_temperature      45.55
loop_
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_Wyckoff_symbol
F2   0    0    0   2a
F2  0.5  0.25  0   6c
