#------------------------------------------------------------------------------
#$Date: 2008-01-13 22:15:36 +0000 (Sun, 13 Jan 2008) $
#$Revision: 14 $
#$URL: svn://www.crystallography.net/cod/cif/2/2002943.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_2002943
_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     orthorhombic
_symmetry_space_group_name_H-M     'C m c m'
_symmetry_space_group_name_Hall     '-C 2c 2'
loop_
    _symmetry_equiv_pos_as_xyz
    'x, y, z'
    '-x, -y, z+1/2'
    'x, -y, -z'
    '-x, y, -z+1/2'
_cell_length_a     7.83729(4)
_cell_length_b     7.84887(4)
_cell_length_c     7.85728(4)
_cell_angle_alpha     90.00
_cell_angle_beta     90.00
_cell_angle_gamma     90.00
_cell_volume     ?
_cell_formula_units_Z     8
_cell_measurement_temperature     803
_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 .25 .25 .0
    Na1 .0 .008(2)   .25
    Na2 .0 .507(2)   .25
    O1 .2253(5) .0 .0
    O2 .0 .2739(6) .0200(5)
    O3 .2737(5) .2478(11) .25