#------------------------------------------------------------------------------
#$Date: 2016-09-16 19:32:28 +0300 (Fri, 16 Sep 2016) $
#$Revision: 186597 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/01/12/1011290.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_1011290
loop_
_publ_author_name
'Gossner, B'
'Kraus, O'
_publ_section_title
;
Das Kristallgitter von Ammoniumhexafluorosilikat (N H4)2 Si F6
;
_journal_coden_ASTM              ZEKGAX
_journal_name_full
;
Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik,
Kristallchemie (-144,1977)
;
_journal_page_first              223
_journal_page_last               225
_journal_volume                  88
_journal_year                    1934
_chemical_formula_structural     '(N H4)2 (Si F6)'
_chemical_formula_sum            'F6 H8 N2 Si'
_chemical_name_mineral           Bararite
_chemical_name_systematic        'Diammonium hexafluorosilicate'
_space_group_IT_number           164
_symmetry_cell_setting           trigonal
_symmetry_Int_Tables_number      164
_symmetry_space_group_name_Hall  '-P 3 2"'
_symmetry_space_group_name_H-M   'P -3 m 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   5.76
_cell_length_b                   5.76
_cell_length_c                   4.77
_cell_volume                     137.1
_cod_original_formula_sum        'H8 F6 N2 Si'
_cod_database_code               1011290
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,x-y,z
y-x,-x,z
-y,-x,z
x,x-y,z
y-x,y,z
-x,-y,-z
y,y-x,-z
x-y,x,-z
y,x,-z
-x,y-x,-z
x-y,-y,-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
Si1 Si4+ 1 a 0. 0. 0. 1. 0 d
F1 F1- 6 i 0.136 -0.136 0.2 1. 0 d
N1 N3- 2 d 0.3333 0.6667 -0.25 1. 4 d
H1 H1+ 2 ? -1. -1. -1. 4. 0 dum
loop_
_atom_type_symbol
_atom_type_oxidation_number
Si4+ 4.000
F1- -1.000
N3- -3.000
H1+ 1.000