#------------------------------------------------------------------------------
#$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: svn://www.crystallography.net/cod/cif/2/2002945.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_2002945
_journal_name_full     'Acta Crystallographica, Section B'
_journal_year     1999
_journal_volume     B55
_journal_page_first     24
_journal_page_last     30
_chemical_formula_moiety     'Na1 O3 Ta1 '
_chemical_formula_sum     'Na1 O3  Ta1 '
_chemical_formula_weight     ?
_symmetry_cell_setting     tetragonal
_symmetry_space_group_name_H-M     'P 4/m b m'
_symmetry_space_group_name_Hall     '-P 4 2ab'
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'
    '-x+1/2, y+1/2, -z'
    'y+1/2, x+1/2, -z'
    '-y+1/2, -x+1/2, -z'
_cell_length_a     5.55465(2)
_cell_length_b     5.55465(2)
_cell_length_c     3.93426(2)
_cell_angle_alpha     90.00
_cell_angle_beta     90.00
_cell_angle_gamma     90.00
_cell_volume     ?
_cell_formula_units_Z     2
_cell_measurement_temperature     878
_diffrn_radiation_type     neutron
_diffrn_radiation_wavelength     ?
_refine_ls_R_factor_all     ?
loop_
    _atom_site_label
    _atom_site_fract_x
    _atom_site_fract_y
    _atom_site_fract_z
    Ta .0 .0 .0
    Na .0 .5 .5
    O1 .0 .0 .5
    O2 .2713(2) .2287(2) .0