#------------------------------------------------------------------------------
#$Date: 2015-07-11 17:18:32 +0300 (Sat, 11 Jul 2015) $
#$Revision: 145223 $
#$URL: svn://www.crystallography.net/cod/cif/1/52/44/1524456.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_1524456
loop_
_publ_author_name
'Gruen, R.'
_publ_section_title
;
 Neubestimmung der Struktur von beta Si3 N4 aus Einkristalldaten
;
_journal_name_full               'Fortschritte der Mineralogie, Beiheft'
_journal_page_first              38
_journal_page_last               39
_journal_volume                  55
_journal_year                    1977
_chemical_formula_sum            'N4 Si3'
_chemical_name_systematic        'Si3 N4'
_space_group_IT_number           173
_symmetry_space_group_name_Hall  'P 6c'
_symmetry_space_group_name_H-M   'P 63'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            2
_cell_length_a                   7.595
_cell_length_b                   7.595
_cell_length_c                   2.9023
_cell_volume                     144.987
_citation_journal_id_ASTM        FMNBB6
_cod_data_source_file            Gruen_FMNBB6_1977_193.cif
_cod_data_source_block           N4Si3
_cod_original_cell_volume        144.9868
_cod_database_code               1524456
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x-y,x,z+1/2
-y,x-y,z
-x,-y,z+1/2
-x+y,-x,z
y,-x+y,z+1/2
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Si1 Si+4 0.7687 0.1744 0.25 1 0.0
N1 N-3 0.0297 0.3295 0.265 1 0.0
N2 N-3 0.3333 0.6667 0.2344 1 0.0
