#------------------------------------------------------------------------------
#$Date: 2024-04-18 17:56:43 +0200 (jue 18 de abr de 2024) $
#$Revision: 291269 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/00/9000053.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_9000053
loop_
_publ_author_name
'Ramsdell, L. S.'
'Mitchell, R. S.'
_publ_section_title
;
 A new hexagonal polymorph of silicon carbide, 19H
;
_journal_name_full               'American Mineralogist'
_journal_page_first              56
_journal_page_last               59
_journal_volume                  38
_journal_year                    1953
_chemical_formula_sum            'C19 Si19'
_chemical_name_common            SiC-19H
_space_group_IT_number           156
_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                   3.079
_cell_length_b                   3.079
_cell_length_c                   47.849
_cell_formula_units_Z            1
_cell_volume                     392.846
_database_code_amcsd             0000056
_exptl_crystal_density_diffrn    3.220
_cod_original_formula_sum        'Si19 C19'
_cod_database_code               9000053
_amcsd_formula_title             SiC-19H
loop_
_space_group_symop_operation_xyz
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
Si 0.00000 0.00000 0.00000
Si 0.00000 0.00000 0.10500
Si 0.00000 0.00000 0.21100
Si 0.00000 0.00000 0.42100
Si 0.00000 0.00000 0.57900
Si 0.00000 0.00000 0.78900
Si 0.00000 0.00000 0.89500
Si 0.33333 0.66667 0.05300
Si 0.33333 0.66667 0.26300
Si 0.33333 0.66667 0.36800
Si 0.33333 0.66667 0.47400
Si 0.33333 0.66667 0.68400
Si 0.33333 0.66667 0.84200
Si 0.66667 0.33333 0.15800
Si 0.66667 0.33333 0.31600
Si 0.66667 0.33333 0.52600
Si 0.66667 0.33333 0.63200
Si 0.66667 0.33333 0.73700
Si 0.66667 0.33333 0.94700
C 0.00000 0.00000 0.03900
C 0.00000 0.00000 0.14500
C 0.00000 0.00000 0.25000
C 0.00000 0.00000 0.46100
C 0.00000 0.00000 0.61800
C 0.00000 0.00000 0.82900
C 0.00000 0.00000 0.93400
C 0.33333 0.66667 0.09200
C 0.33333 0.66667 0.30300
C 0.33333 0.66667 0.40800
C 0.33333 0.66667 0.51300
C 0.33333 0.66667 0.72400
C 0.33333 0.66667 0.88200
C 0.66667 0.33333 0.19700
C 0.66667 0.33333 0.35500
C 0.66667 0.33333 0.56600
C 0.66667 0.33333 0.67100
C 0.66667 0.33333 0.77600
C 0.66667 0.33333 0.98700
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0000056
