#------------------------------------------------------------------------------
#$Date: 2024-05-02 12:48:35 +0200 (Thu 02 de May de 2024) $
#$Revision: 291455 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/71/9007171.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_9007171
loop_
_publ_author_name
'Angel, R. J.'
'Shaw, C. S. J.'
'Gibbs, G. V.'
_publ_section_title
;
 Compression mechanisms of coesite
 Sample: X4P1, P = 8.68 GPa
;
_journal_name_full               'Physics and Chemistry of Minerals'
_journal_page_first              167
_journal_page_last               176
_journal_paper_doi               10.1007/s00269-003-0303-9
_journal_volume                  30
_journal_year                    2003
_chemical_formula_sum            'O2 Si'
_chemical_name_mineral           Coesite
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 120.962
_cell_angle_gamma                90
_cell_length_a                   6.8886
_cell_length_b                   12.1377
_cell_length_c                   7.0625
_cell_formula_units_Z            16
_cell_volume                     506.366
_database_code_amcsd             0008756
_diffrn_ambient_pressure         8.68e+06
_exptl_crystal_density_diffrn    3.153
_cod_original_formula_sum        'Si O2'
_cod_database_code               9007171
loop_
_space_group_symop_operation_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,1/2+z
1/2+x,1/2-y,1/2+z
-x,y,1/2-z
1/2-x,1/2+y,1/2-z
-x,-y,-z
1/2-x,1/2-y,-z
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Si1 0.00619 0.00403 0.00483 -0.00036 0.00344 -0.00045
Si2 0.00813 0.00485 0.00465 -0.00022 0.00435 -0.00019
O1 0.02298 0.00000 0.01152 -0.00036 0.01033 0.00074
O2 0.01768 0.00522 0.00743 0.00000 0.00979 0.00000
O3 0.00654 0.01269 0.00687 -0.00036 0.00471 -0.00074
O4 0.01167 0.00821 0.00855 -0.00145 0.00507 -0.00186
O5 0.01008 0.00448 0.01226 0.00036 0.00797 0.00037
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Si1 0.13470 0.11137 0.06850 0.00469
Si2 0.50920 0.15646 0.54632 0.00532
O1 0.00000 0.00000 0.00000 0.01102
O2 0.50000 0.10470 0.75000 0.00836
O3 0.24500 0.13330 0.91980 0.00811
O4 0.32280 0.09946 0.32390 0.00950
O5 0.03320 0.21241 0.46890 0.00798
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0008756
