data_1001259
_chemical_name_systematic          'Lanthanum aluminium oxide (.9/11.9/18.9)'
_chemical_formula_structural       'La0.9 Al11.95 O18.9'
_chemical_formula_analytical       'La0.9 Co0.75 Al11.2 O18.9'
_chemical_formula_sum              'Al11.95 La.9 O18.9'
_publ_section_title
;
Influence of M^2+^ ions substitution on the structure of lanthanum
hexaaluminates with magnetoplumbite structure
;
loop_
_publ_author_name
  'Gasperin, M'
  'Saine, M C'
  'LaVille, F'
  'Lejus, A M'
  'Kahn, A'
_journal_name_full                 'Journal of Solid State Chemistry'
_journal_coden_ASTM                JSSCBI
_journal_volume                    54
_journal_year                      1984
_journal_page_first                61
_journal_page_last                 69
_cell_length_a                     5.577
_cell_length_b                     5.577
_cell_length_c                     22.003
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  120
_cell_volume                       592.7
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'P 63/m m c'
_symmetry_Int_Tables_number        194
_symmetry_cell_setting             hexagonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-y,x-y,z'
  'y-x,-x,z'
  '-y,-x,z'
  'y-x,y,z'
  'x,x-y,z'
  '-x,-y,-z'
  'y,y-x,-z'
  'x-y,x,-z'
  'y,x,-z'
  'x-y,-y,-z'
  '-x,y-x,-z'
  '-x,-y,1/2+z'
  'y,y-x,1/2+z'
  'x-y,x,1/2+z'
  'y,x,1/2+z'
  'x-y,-y,1/2+z'
  '-x,y-x,1/2+z'
  'x,y,1/2-z'
  '-y,x-y,1/2-z'
  'y-x,-x,1/2-z'
  '-y,-x,1/2-z'
  'y-x,y,1/2-z'
  'x,x-y,1/2-z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  La3+   3.000
  Al3+   3.000
  O2-   -2.000
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
  La1   La3+   6 h 0.677(1) 0.323 0.25 0.3  0 d
  Al1   Al3+   2 a 0. 0. 0. 1.  0 d
  Al2   Al3+   4 f 0.3333 0.6667 0.0265(2) 1.  0 d
  Al3   Al3+   4 f 0.3333 0.6667 0.1894(4) 1.  0 d
  Al4   Al3+  12 k 0.8325(10) 0.665 0.1079(1) 1.  0 d
  Al5   Al3+   4 e 0. 0. 0.2382(5) 0.44  0 d
  O1    O2-    6 h 0.1853(30) 0.3706 0.25 1.  0 d
  O2    O2-   12 k 0.153(2) 0.306 0.0536(4) 1.  0 d
  O3    O2-   12 k 0.5034(20) 0.0068 0.1505(1) 1.  0 d
  O4    O2-    4 e 0. 0. 0.1500(6) 1.  0 d
  O5    O2-    4 f 0.6667 0.3333 0.0571(6) 1.  0 d
_refine_ls_R_factor_all            0.06