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#$Date: 2015-07-10 12:17:32 +0300 (Fri, 10 Jul 2015) $
#$Revision: 141595 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/52/13/1521386.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_1521386
loop_
_publ_author_name
'Kennedy, B.J.'
'Prodjosantoso, A.K.'
'Howard, C.J.'
_publ_section_title
;
 Powder neutron diffraction study of the high temperature phase
 transitions in Na Ta O3
;
_journal_name_full               'Journal of Physics: Condensed Matter'
_journal_page_first              6319
_journal_page_last               6327
_journal_volume                  11
_journal_year                    1999
_chemical_formula_sum            'Na O3 Ta'
_chemical_name_systematic        'Na (Ta O3)'
_space_group_IT_number           127
_symmetry_space_group_name_Hall  '-P 4 2ab'
_symmetry_space_group_name_H-M   'P 4/m b m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.5503
_cell_length_b                   5.5503
_cell_length_c                   3.9335
_cell_volume                     121.175
_citation_journal_id_ASTM        JCOMEL
_cod_data_source_file            Kennedy_JCOMEL_1999_102.cif
_cod_data_source_block           Na1O3Ta1
_cod_original_cell_volume        121.1747
_cod_chemical_formula_sum_orig   'Na1 O3 Ta1'
_cod_database_code               1521386
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-y,x,z
-x,-y,z
y,-x,z
x+1/2,-y+1/2,-z
y+1/2,x+1/2,-z
-x+1/2,y+1/2,-z
-y+1/2,-x+1/2,-z
-x,-y,-z
y,-x,-z
x,y,-z
-y,x,-z
-x-1/2,y-1/2,z
-y-1/2,-x-1/2,z
x-1/2,-y-1/2,z
y-1/2,x-1/2,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
Ta1 Ta+5 0 0 0 1 0.0
Na1 Na+1 0 0.5 0.5 1 0.0
O1 O-2 0 0 0.5 1 0.0
O2 O-2 0.2741 0.7741 0 1 0.0