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#$Date: 2009-11-14 15:09:05 +0200 (Sat, 14 Nov 2009) $
#$Revision: 846 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/2004306.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_2004306
_journal_name_full               'Acta Crystallographica C'
_journal_volume                  51
_journal_year       1995
_journal_page_first    	2476
_journal_page_last    	2477
_publ_section_title
;
Low-Density Form of NaGaSi~2~O~6~
;
_chemical_formula_sum    	'Na Ga Si2 O6'
_chemical_formula_weight    	244.88
_symmetry_cell_setting    	monoclinic
loop_
_symmetry_equiv_pos_as_xyz
'x,y,z'
'x,-y,1/2+z'
'-x,-y,-z'
'-x,y,1/2-z'
'1/2+x,1/2+y,z'
'1/2+x,1/2-y,1/2+z'
'1/2-x,1/2-y,-z'
'1/2-x,1/2+y,1/2-z'
_symmetry_space_group_name_H-M    	'C 2/c'
_cell_length_a    	9.5573(5)
_cell_length_b    	8.7019(2)
_cell_length_c    	5.2705(3)
_cell_angle_alpha    	90
_cell_angle_beta    	107.637(2)
_cell_angle_gamma    	90
_cell_volume    	417.73(4)
_cell_formula_units_Z    	4
_exptl_crystal_density_diffrn    	3.89
_cell_measurement_temperature    	296
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Na 0 0.3005(1) .25 0.0125(3)
Ga 0 0.90189(3) .25 0.00471(5)
Si 0.29116(5) 0.09116(5) 0.2322(1) 0.0043(1)
O1 0.1120(2) 0.0779(1) 0.1334(3) 0.0057(3)
O2 0.3587(2) 0.2588(2) 0.3018(3) 0.0076(3)
O3 0.3527(1) 0.0097(2) 0.0076(2) 0.0068(3)