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#$Date: 2016-02-13 13:50:18 +0100 (Sat 13 de Feb de 2016) $
#$Revision: 176428 $
#$URL: svn://www.crystallography.net/cod/cif/1/53/00/1530052.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_1530052
loop_
_publ_author_name
'Hang, C.'
'Simonov, M.A.'
'Belov, N.V.'
_publ_section_title
;
 The crystalline structure of Ramsayite Na2 Ti2 Si2 O9 = Na2 Ti2 O3 (Si2
 O6)
;
_journal_name_full               'Doklady Akademii Nauk SSSR'
_journal_page_first              820
_journal_page_last               823
_journal_volume                  186
_journal_year                    1969
_chemical_formula_sum            'Na2 O9 Si2 Ti2'
_chemical_name_systematic        'Na2 Ti2 O3 (Si O3)2'
_space_group_IT_number           60
_symmetry_space_group_name_Hall  '-P 2a 2n'
_symmetry_space_group_name_H-M   'P n c a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.518
_cell_length_b                   8.976
_cell_length_c                   5.081
_cell_volume                     662.123
_citation_journal_id_ASTM        DANKAS
_cod_data_source_file            Hang_DANKAS_1969_858.cif
_cod_data_source_block           Na2O9Si2Ti2
_cod_original_cell_volume        662.1232
_cod_original_sg_symbol_Hall     '-P 2n 2ab (z,x,y)'
_cod_database_code               1530052
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x+1/2,-y+1/2,-z+1/2
-x,y+1/2,-z+1/2
-x+1/2,-y,z
-x,-y,-z
-x-1/2,y-1/2,z-1/2
x,-y-1/2,z-1/2
x-1/2,y,-z
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
O2 O-2 0.072 0.515 0.741 1 0.0
O3 O-2 0.064 0.266 0.449 1 0.0
Ti1 Ti+4 0.169 0.652 0.631 1 0.0
O4 O-2 0.274 0.182 0.443 1 0.0
O5 O-2 0.085 0.669 0.292 1 0.0
Si1 Si+4 0.026 0.158 0.206 1 0.0
O1 O-2 0.25 0 0.014 1 0.0
Na1 Na+1 0.155 0.066 0.643 1 0.0
