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#$Date: 2016-02-13 21:28:24 +0200 (Sat, 13 Feb 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/7/22/21/7222189.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_7222189
loop_
_publ_author_name
'Kim, J.-Y.'
'Chung, I.'
'Kim, S.-J.'
'Choy, J.-H.'
_publ_section_title
;
 Transformation of Dion-Jacobson-type layered oxyfluorides into new
 anion-deficient pyrochlore-type oxides, A Sr Nb2 O6.5 (A = Li and Na)
;
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              1001
_journal_page_last               1004
_journal_volume                  12
_journal_year                    2002
_chemical_formula_sum            'Na Nb2 O6.5 Sr'
_chemical_name_systematic        'Na Sr Nb2 O6.5'
_space_group_IT_number           227
_symmetry_space_group_name_Hall  '-F 4vw 2vw 3'
_symmetry_space_group_name_H-M   'F d -3 m :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   10.5324
_cell_length_b                   10.5324
_cell_length_c                   10.5324
_cell_volume                     1168.374
_citation_journal_id_ASTM        JMACEP
_cod_data_source_file            Kim_JMACEP_2002_700.cif
_cod_data_source_block           Na1Nb2O6.5Sr1
_cod_original_formula_sum        'Na1 Nb2 O6.5 Sr1'
_cod_database_code               7222189
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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
Na1 Na+1 0 0 0 0.5 0.0
Sr1 Sr+2 0 0 0 0.5 0.0
O2 O-2 0.125 0.125 0.125 0.5 0.0
Nb1 Nb+5 0.5 0.5 0.5 1 0.0
O1 O-2 0.408 0.125 0.125 1 0.0
