data_global
_amcsd_formula_title 'Al As O4'
loop_
_publ_author_name
'Strada M'
_journal_name_full 'Gazzetta Chimica Italiana'
_journal_volume 64 
_journal_year 1934
_journal_page_first 653
_journal_page_last 662
_publ_section_title
;
 La struttura cristallina di alcuni fosfati ed arseniati di metalli
 trivalenti. I. Fosfato ed arseniato di alluminio
 _cod_database_code 1010143
;
_database_code_amcsd 0017073
_chemical_formula_sum 'Al As O4'
_cell_length_a 4.90
_cell_length_b 4.90
_cell_length_c 6.64
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 159.426
_exptl_crystal_density_diffrn      3.456
_symmetry_space_group_name_H-M 'I -4'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Al1   0.00000   0.00000   0.00000
As1   0.00000   0.50000   0.75000
O1   0.23200   0.27100   0.11800