#------------------------------------------------------------------------------
#$Date: 2024-04-18 18:56:43 +0300 (Thu, 18 Apr 2024) $
#$Revision: 291269 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/17/9001777.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_9001777
loop_
_publ_author_name
'Fleet, M. E.'
_publ_section_title
;Sodium tetrasilicate: A complex high-pressure framework silicate
 (Na6Si3[Si9O27])
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1105
_journal_page_last               1110
_journal_volume                  81
_journal_year                    1996
_chemical_formula_sum            'Na2 O9 Si4'
_chemical_name_mineral           Na6Si3[Si9O27]
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 90.18
_cell_angle_gamma                90
_cell_length_a                   10.875
_cell_length_b                   9.326
_cell_length_c                   19.224
_cell_formula_units_Z            12
_cell_volume                     1949.693
_database_code_amcsd             0001833
_exptl_crystal_density_diffrn    3.090
_cod_original_formula_sum        'Na2 Si4 O9'
_cod_database_code               9001777
_amcsd_formula_title             Na6Si3[Si9O27]
loop_
_space_group_symop_operation_xyz
x,y,z
1/2+x,1/2-y,1/2+z
1/2-x,1/2+y,1/2-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Na1 0.93830 0.05130 0.29550
Na2 0.92740 0.47680 0.27220
Na3 0.43670 0.04470 0.38630
Na4 0.39480 0.02630 0.07730
Na5 0.48330 0.46350 0.38420
Na6 0.33040 0.45820 0.07260
Si1 0.71897 0.00508 0.41306
Si2 0.27224 0.00272 0.24171
Si3 0.78255 0.49927 0.42084
Si4 0.94002 0.22798 0.45674
Si5 0.56746 0.27450 0.10670
Si6 0.44151 0.27507 0.24580
Si7 0.71925 0.26456 0.30325
Si8 0.87596 0.24314 0.16051
Si9 0.15079 0.24210 0.15532
Si10 0.59627 0.26068 0.49017
Si11 0.30679 0.26137 0.48260
Si12 0.16298 0.24081 0.34665
O1 0.90200 0.39300 0.45830
O2 0.50080 0.30870 0.03270
O3 0.89650 0.39670 0.12600
O4 0.45680 0.31280 0.16290
O5 0.28350 0.24170 0.39800
O6 0.78080 0.39190 0.34560
O7 0.45070 0.30970 0.48760
O8 0.19060 0.39640 0.18320
O9 0.35480 0.39300 0.27910
O10 0.01560 0.19150 0.18370
O11 0.80650 0.25350 0.23480
O12 0.67020 0.39000 0.12400
O13 0.04360 0.19410 0.39580
O14 0.72440 0.10740 0.33390
O15 0.83310 0.11440 0.45110
O16 0.13090 0.39340 0.31300
O17 0.66490 0.39380 0.45750
O18 0.57770 0.30930 0.28130
O19 0.21480 0.38760 0.50450
O20 0.17560 0.11060 0.29430
O21 0.24300 0.11080 0.16730
O22 0.40680 0.11160 0.26160
O23 0.14150 0.26780 0.07070
O24 0.83090 0.11320 0.11520
O25 0.59830 0.10880 0.11830
O26 0.28350 0.10170 0.51010
O27 0.60200 0.11540 0.44710
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0001833
