#------------------------------------------------------------------------------
#$Date: 2008-01-13 22:15:36 +0000 (Sun, 13 Jan 2008) $
#$Revision: 14 $
#$URL: svn://www.crystallography.net/cod/cif/1/1010142.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_1010142
_chemical_name_systematic          'Aluminium phosphate'
_chemical_formula_structural       'Al P O4'
_chemical_formula_sum              'Al O4 P'
_publ_section_title
;
La struttura cristallina di alcuni fosfati ed arseniati di metalli
trivalenti. I. Fosfato ed arseniato di alluminio
;
_publ_author_name                  'Strada, M'
_journal_name_full                 'Gazzetta Chimica Italiana'
_journal_coden_ASTM                GCITA9
_journal_volume                    64
_journal_year                      1934
_journal_page_first                653
_journal_page_last                 662
_cell_length_a                     4.85(1)
_cell_length_b                     4.85(1)
_cell_length_c                     6.60(1)
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       155.2
_cell_formula_units_Z              2
_exptl_crystal_density_meas        2.31
_symmetry_space_group_name_H-M     'I -4'
_symmetry_Int_Tables_number        82
_symmetry_cell_setting             tetragonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,z'
  'y,-x,-z'
  '-y,x,-z'
  '1/2+x,1/2+y,1/2+z'
  '1/2-x,1/2-y,1/2+z'
  '1/2+y,1/2-x,1/2-z'
  '1/2-y,1/2+x,1/2-z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Al3+   3.000
  P5+    5.000
  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
  Al1   Al3+   2 a 0. 0. 0. 1.  0 d
  P1    P5+    2 d 0.5 0. 0.25 1.  0 d
  O1    O2-    8 g 0.2599 0.238 0.13 1.  0 d