data_1008166
_publ_section_title              'Structure de $-gamma-Li Al O₂'
_journal_coden_ASTM              BUFCAE
_journal_name_full
;
Bulletin de la Societe Francaise de Mineralogie et de Cristallographie
(72,1949-100,1977)
;
_journal_page_first              103
_journal_page_last               108
_journal_volume                  88
_journal_year                    1965
_chemical_formula_structural     'Al Li O2'
_chemical_formula_sum            'Al Li O2'
_chemical_name_systematic        'Lithium aluminium oxide - $-gamma'
_space_group_IT_number           92
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      92
_symmetry_space_group_name_Hall  'P 4abw 2nw'
_symmetry_space_group_name_H-M   'P 41 21 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.17
_cell_length_b                   5.17
_cell_length_c                   6.295
_cell_volume                     168.3
_refine_ls_R_factor_all          0.053
_cod_database_code               1008166
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,1/2+z
1/2-y,1/2+x,1/4+z
1/2+y,1/2-x,3/4+z
y,x,-z
-y,-x,1/2-z
1/2-x,1/2+y,1/4-z
1/2+x,1/2-y,3/4-z
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
Al1 Al3+ 4 a 0.176(29) 0.176(29) 0. 1. 0 d
Li1 Li1+ 4 a -0.189(95) -0.189(95) 0. 1. 0 d
O1 O2- 8 b 0.211(33) -0.165(37) 0.022(20) 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Al3+ 3.000
Li1+ 1.000
O2- -2.000
