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#$Date: 2016-02-13 20:28:24 +0100 (Sat 13 de Feb de 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/2/31/08/2310858.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# 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_2310858
loop_
_publ_author_name
'Grund, A.'
'Pizy, M.M.'
_publ_section_title
;
 Structure Cristalline du Metasilicate de Sodium Anhydre, Na2 Si O3
;
_journal_name_full               'Acta Crystallographica (1,1948-23,1967)'
_journal_page_first              837
_journal_page_last               840
_journal_volume                  5
_journal_year                    1952
_chemical_formula_sum            'Na2 O3 Si'
_chemical_name_systematic        'Na2 Si O3'
_space_group_IT_number           36
_symmetry_space_group_name_Hall  'C 2c -2'
_symmetry_space_group_name_H-M   'C m c 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.43
_cell_length_b                   6.02
_cell_length_c                   4.81
_cell_volume                     302.013
_citation_journal_id_ASTM        ACCRA9
_cod_data_source_file            Grund_ACCRA9_1952_179.cif
_cod_data_source_block           Na2O3Si1
_cod_original_cell_volume        302.0132
_cod_original_formula_sum        'Na2 O3 Si1'
_cod_database_code               2310858
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z+1/2
-x,y,z
x,-y,z+1/2
x+1/2,y+1/2,z
-x+1/2,-y+1/2,z+1/2
-x+1/2,y+1/2,z
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
Si1 Si+4 0 0.166 0.563 1 0.0
O2 O-2 0.13 0.286 0.5 1 0.0
Na1 Na+1 0.166 0.339 0 1 0.0
O1 O-2 0 0.077 0.895 1 0.0
