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#$Date: 2009-11-23 07:50:56 +0200 (Mon, 23 Nov 2009) $
#$Revision: 903 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9012107.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9012107
loop_
_publ_author_name
'van Rensburg, D. J. J.'
'Boeyens, J. C. A.'
_publ_section_title
;
 The crystal structure of ammonium tetrafluoroborate IV at 140 K
 Locality: synthetic
 Sample: T = 140 K
 Note: x(H2), y(H2) adjusted to match reported bond lengths
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              79
_journal_page_last               84
_journal_volume                  5
_journal_year                    1972
_chemical_formula_sum            'B F4 H4 N'
_chemical_name_mineral           Barberiite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2c 2ab'
_symmetry_space_group_name_H-M   'P b n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.243
_cell_length_b                   8.808
_cell_length_c                   5.908
_cell_volume                     376.909
_diffrn_ambient_temperature      140
_[local]_cod_data_source_file    11941.cif
_[local]_cod_data_source_block   global
_[local]_cod_chemical_formula_sum_orig 'N H4 B F4'
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,y,1/2-z
-x,-y,1/2+z
1/2+x,1/2-y,1/2+z
1/2-x,1/2+y,1/2-z
1/2-x,1/2+y,z
1/2+x,1/2-y,-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
N 0.17140 0.18430 0.25000 0.00892
H1 0.13000 0.29000 0.25000 0.03800
H2 0.28900 0.19800 0.25000 0.03800
H3 0.10000 0.15000 0.08000 0.03800
B 0.69050 0.07220 0.25000 0.01549
F1 0.58220 0.94030 0.25000 0.03047
F2 0.57640 0.20190 0.25000 0.01990
F3 0.80600 0.07680 0.05270 0.01861