data_9012469
_publ_section_title
;
 On the structure of trigonal ammonium fluorosilicate
 Locality: synthetic
;
_journal_name_full               'Journal of Chemical Physics'
_journal_page_first              408
_journal_page_last               409
_journal_paper_doi               10.1063/1.2716548
_journal_volume                  45
_journal_year                    1966
_chemical_formula_sum            'F6 N2 Si'
_chemical_name_mineral           Bararite
_space_group_IT_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_length_a                   5.784
_cell_length_b                   5.784
_cell_length_c                   4.796
_cell_volume                     138.953
_exptl_crystal_density_diffrn    2.033
_[local]_cod_chemical_formula_sum_orig 'N2 Si F6'
_cod_original_cell_volume        138.952
_cod_database_code               9012469
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,-x,z
y,-x+y,-z
-x,-x+y,-z
-x+y,-x,z
-x+y,y,z
-x,-y,-z
y,x,-z
-y,x-y,z
x,x-y,z
x-y,x,-z
x-y,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
NH4 0.33333 0.66667 0.33000
Si 0.00000 0.00000 0.00000
F 0.13900 -0.13900 0.79900
