data_global
_chemical_name_mineral 'Oxygen'
loop_
_publ_author_name
'Cox D E'
'Samuelsen E J'
'Ceckurts K H'
_journal_name_full 'Physical Review'
_journal_volume B7 
_journal_year 1973
_journal_page_first 3102
_journal_page_last 3111
_publ_section_title
;
 Neutron-Diffraction determination of the crystal structure and magnetic form
 factor of gamma-oxygen
 Sample: at T = 46 K
 Note: gamma phase, stable between 44 K & 55 K
;
_database_code_amcsd 0015160
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'O.25'
_cell_length_a 6.78
_cell_length_b 6.78
_cell_length_c 6.78
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 311.666
_exptl_crystal_density_diffrn      1.364
_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
_atom_site_occupancy
O1   0.04360   0.04360   0.04360   0.25000
O2   0.03400   0.25160   0.41510   0.25000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
O1 0.13110 0.13110 0.13110 -0.01800 -0.01800 -0.01800
O2 0.05860 0.10630 0.09260 -0.00380 -0.00790 -0.01580