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#$Date: 2015-10-09 19:49:10 +0300 (Fri, 09 Oct 2015) $
#$Revision: 162565 $
#$URL: svn://www.crystallography.net/cod/cif/1/53/52/1535274.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_1535274
loop_
_publ_author_name
'Birchall, T.'
'Sleight, A.W.'
_publ_section_title
;
 Nonstoichiometric phasis in the Sn-Sb-O and Sn-Ta-O systems having
 pyrochlore-related structures
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              118
_journal_page_last               130
_journal_volume                  13
_journal_year                    1975
_chemical_formula_sum            'O6.54 Sn2.2 Ta1.56'
_chemical_name_systematic        'Sn1.76 Ta1.56 Sn0.44 O6.54'
_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                   10.5907
_cell_length_b                   10.5907
_cell_length_c                   10.5907
_cell_volume                     1187.884
_citation_journal_id_ASTM        JSSCBI
_cod_data_source_file            Birchall_JSSCBI_1975_727.cif
_cod_data_source_block           O6.54Sn2.2Ta1.56
_cod_database_code               1535274
loop_
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-x+3/4,y,-z+3/4
-y,-x,-z
z,x,y
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-x,-z,-y
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z,-y+1/4,-x-3/4
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 0.5 0.5 0.5 0.78 0.0
Sn1 Sn+2 0.018 0.018 -0.026 0.1467 0.0
O2 O-2 0.125 0.125 0.125 0.54 0.0
O1 O-2 0.44 0.125 0.125 1 0.0
Sn2 Sn+4 0.5 0.5 0.5 0.22 0.0
