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#$Date: 2016-02-14 16:26:36 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176435 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/00/01/1000183.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_1000183
loop_
_publ_author_name
'Bulou, A'
'Leble, A'
'Hewat, A W'
_publ_section_title
;
NH~4~AlF~4~: Determination of the Ordered and Disordered Structures by
Neutron Powder Profile Refinement
;
_journal_coden_ASTM              MRBUAC
_journal_name_full               'Materials Research Bulletin'
_journal_page_first              391
_journal_page_last               397
_journal_paper_doi               10.1016/0025-5408(82)90090-3
_journal_volume                  17
_journal_year                    1982
_chemical_formula_structural     'N H4 Al F4'
_chemical_formula_sum            'Al F4 H4 N'
_chemical_name_systematic        'Ammonium tetrafluoroaluminate'
_space_group_IT_number           135
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      135
_symmetry_space_group_name_Hall  '-P 4c 2ab'
_symmetry_space_group_name_H-M   'P 42/m b c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.0564(1)
_cell_length_b                   5.0564(1)
_cell_length_c                   12.7113(2)
_cell_volume                     325.0
_refine_ls_R_factor_all          0.0656
_cod_original_formula_sum        'H4 Al F4 N'
_cod_database_code               1000183
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,x,1/2+z
1/2+x,1/2-y,z
1/2+y,1/2+x,1/2+z
x,y,-z
-y,x,1/2-z
1/2+x,1/2-y,-z
1/2+y,1/2+x,1/2-z
-x,-y,-z
y,-x,1/2-z
1/2-x,1/2+y,-z
1/2-y,1/2-x,1/2-z
-x,-y,z
y,-x,1/2+z
1/2-x,1/2+y,z
1/2-y,1/2-x,1/2+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
N1 N3- 4 b 0. 0. 0.25 1. 0 d
H1 H1+ 16 i 0.0017(60) 0.8310(4) 0.2030(2) 1. 0 d
Al1 Al3+ 4 c 0. 0.5 0. 1. 0 d
F1 F1- 8 f 0. 0.5 0.1394(1) 1. 0 d
F2 F1- 8 h 0.2957(7) 0.2980(8) 0. 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
N3- -3.000
H1+ 1.000
Al3+ 3.000
F1- -1.000