data_1008156
_chemical_name_systematic          'Xenon(II) fluoride'
_chemical_formula_structural       'Xe F2'
_chemical_formula_sum              'F2 Xe'
_publ_section_title
;
The Crystal and Molecular Structure of Xenon Difluoride by Neutron
Diffraction
;
loop_
_publ_author_name
  'Levy, H A'
  'Agron, P A'
_journal_name_full                 'Journal of the American Chemical Society'
_journal_coden_ASTM                JACSAT
_journal_volume                    85
_journal_year                      1963
_journal_page_first                241
_journal_page_last                 242
_cell_length_a                     4.315
_cell_length_b                     4.315
_cell_length_c                     6.99
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       130.1
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'I 4/m m m'
_symmetry_Int_Tables_number        139
_symmetry_cell_setting             tetragonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,z'
  '-x,y,z'
  'x,-y,z'
  '-y,x,z'
  'y,-x,z'
  'y,x,z'
  '-y,-x,z'
  '-x,-y,-z'
  'x,y,-z'
  'x,-y,-z'
  '-x,y,-z'
  'y,-x,-z'
  '-y,x,-z'
  '-y,-x,-z'
  'y,x,-z'
  '1/2+x,1/2+y,1/2+z'
  '1/2-x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-y,1/2+x,1/2+z'
  '1/2+y,1/2-x,1/2+z'
  '1/2+y,1/2+x,1/2+z'
  '1/2-y,1/2-x,1/2+z'
  '1/2-x,1/2-y,1/2-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2+x,1/2-y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '1/2+y,1/2-x,1/2-z'
  '1/2-y,1/2+x,1/2-z'
  '1/2-y,1/2-x,1/2-z'
  '1/2+y,1/2+x,1/2-z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Xe2+   2.000
  F1-   -1.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  Xe1   Xe2+   2 a 0. 0. 0. 1.  0 d
  F1    F1-    4 e 0. 0. 0.2837(3) 1.  0 d
_refine_ls_R_factor_all            0.097