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#$Date: 2015-07-08 16:40:06 +0300 (Wed, 08 Jul 2015) $
#$Revision: 141118 $
#$URL: svn://www.crystallography.net/cod/cif/7/22/10/7221076.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_7221076
loop_
_publ_author_name
'Shen, Z.-J.'
'Esmaeilzadeh, S.'
'Grins, J.'
'Ehrenberg, H.'
_publ_section_title
;
 Preparation and crystal structure of a new Sr containing sialon phase Sr2
 Alx Si12-x N16-x O2+x (x=2)
;
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              1019
_journal_page_last               1022
_journal_volume                  9
_journal_year                    1999
_chemical_formula_sum            'Al2 N14 O4 Si10 Sr2'
_chemical_name_systematic        'Sr2 (Al2 Si10 N14 O4)'
_space_group_IT_number           44
_symmetry_space_group_name_Hall  'I 2 -2'
_symmetry_space_group_name_H-M   'I m m 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            1
_cell_length_a                   8.2788
_cell_length_b                   9.5757
_cell_length_c                   4.9158
_cell_volume                     389.702
_citation_journal_id_ASTM        JMACEP
_cod_data_source_file            Shen_JMACEP_1999_123.cif
_cod_data_source_block           Al2N14O4Si10Sr2
_cod_original_cell_volume        389.7015
_cod_database_code               7221076
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z
-x,y,z
x,-y,z
x+1/2,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+1/2,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
N1 N-3 0.7347 0.5 0.1356 0.5 0.0
N2 N-3 0.8301 0.2746 0.4958 1 0.0
N3 N-3 0 0.3073 0.0003 1 0.0
O1 O-2 0.7347 0.5 0.1356 0.5 0.0
Si2 Si+4 0.8085 0.3354 0.1575 0.75 0.0
Al1 Al+3 0.8085 0.3354 0.1575 0.25 0.0
Sr1 Sr+2 0 0 0.266 1 0.0
Si1 Si+4 0 0.3381 0.6526 1 0.0
O2 O-2 0 0.5 0.5749 1 0.0
