data_1011034
_chemical_name_systematic          'Calcium aluminium oxide (12/14/33)'
_chemical_name_mineral             'Mayenite'
_chemical_compound_source          'synthetic at 1743 K'
_chemical_formula_structural       'Ca12 Al14 O33'
_chemical_formula_sum              'Al14 Ca12 O33'
_publ_section_title                'Die Struktur des Pentacalciumtrialuminats'
loop_
_publ_author_name
  'Buessem, W'
  'Eitel, A'
_journal_name_full
;
Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik,
Kristallchemie (-144,1977)
;
_journal_coden_ASTM                ZEKGAX
_journal_volume                    95
_journal_year                      1936
_journal_page_first                175
_journal_page_last                 188
_cell_length_a                     11.95
_cell_length_b                     11.95
_cell_length_c                     11.95
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       1706.5
_cell_formula_units_Z              2
_exptl_crystal_density_meas        2.69(0)
_symmetry_space_group_name_H-M     'I -4 3 d'
_symmetry_Int_Tables_number        220
_symmetry_cell_setting             cubic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2-y,-z'
  '-x,1/2+y,1/2-z'
  '1/2-x,-y,1/2+z'
  '1/4+x,1/4+z,1/4+y'
  '3/4+x,1/4-z,3/4-y'
  '1/4-x,3/4-z,3/4+y'
  '3/4-x,3/4+z,1/4-y'
  'y,z,x'
  '1/2-y,-z,1/2+x'
  '1/2+y,1/2-z,-x'
  '-y,1/2+z,1/2-x'
  '1/4+z,1/4+y,1/4+x'
  '1/4-z,3/4-y,3/4+x'
  '3/4-z,3/4+y,1/4-x'
  '3/4+z,1/4-y,3/4-x'
  'z,x,y'
  '-z,1/2+x,1/2-y'
  '1/2-z,-x,1/2+y'
  '1/2+z,1/2-x,-y'
  '1/4+y,1/4+x,1/4+z'
  '3/4-y,3/4+x,1/4-z'
  '3/4+y,1/4-x,3/4-z'
  '1/4-y,3/4-x,3/4+z'
  '1/2+x,1/2+y,1/2+z'
  'x,-y,1/2-z'
  '1/2-x,y,-z'
  '-x,1/2-y,z'
  '3/4+x,3/4+z,3/4+y'
  '1/4+x,3/4-z,1/4-y'
  '3/4-x,1/4-z,1/4+y'
  '1/4-x,1/4+z,3/4-y'
  '1/2+y,1/2+z,1/2+x'
  '-y,1/2-z,x'
  'y,-z,1/2-x'
  '1/2-y,z,-x'
  '3/4+z,3/4+y,3/4+x'
  '3/4-z,1/4-y,1/4+x'
  '1/4-z,1/4+y,3/4-x'
  '1/4+z,3/4-y,1/4-x'
  '1/2+z,1/2+x,1/2+y'
  '1/2-z,x,-y'
  '-z,1/2-x,y'
  'z,-x,1/2-y'
  '3/4+y,3/4+x,3/4+z'
  '1/4-y,1/4+x,3/4-z'
  '1/4+y,3/4-x,1/4-z'
  '3/4-y,1/4-x,1/4+z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Ca2+   2.000
  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
  Ca1   Ca2+  24 d 0.103 0. 0.25 1.  0 d
  Al1   Al3+  12 a 0.375 0. 0.25 1.  0 d
  Al2   Al3+  16 c -0.022 -0.022 -0.022 1.  0 d
  O1    O2-   16 c 0.064 0.064 0.064 1.  0 d
  O2    O2-   48 e 0.283 0.097 0.197 1.  0 d
  O3    O2-    2 ? -1. -1. -1. 1.  0 dum