#------------------------------------------------------------------------------ #$Date: 2016-02-13 21:28:24 +0200 (Sat, 13 Feb 2016) $ #$Revision: 176429 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/53/41/1534191.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_1534191 loop_ _publ_author_name 'Awadalla, A.A.' 'Gatehouse, B.M.' _publ_section_title ; Crystal structure of some niobium and tantalum oxides. IV. The structure of K Ta5 O13 and its relationship to the alpha Pb O2 structure ; _journal_name_full 'Journal of Solid State Chemistry' _journal_page_first 183 _journal_page_last 187 _journal_volume 24 _journal_year 1978 _chemical_formula_sum 'K O13 Ta5' _chemical_name_systematic 'K (Ta5 O13)' _space_group_IT_number 57 _symmetry_space_group_name_Hall '-P 2c 2b' _symmetry_space_group_name_H-M 'P b c m' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 5.653 _cell_length_b 10.708 _cell_length_c 16.799 _cell_volume 1016.883 _citation_journal_id_ASTM JSSCBI _cod_data_source_file Awadalla_JSSCBI_1978_144.cif _cod_data_source_block K1O13Ta5 _cod_original_formula_sum 'K1 O13 Ta5' _cod_database_code 1534191 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,-y,z+1/2 x,-y+1/2,-z -x,y+1/2,-z+1/2 -x,-y,-z x,y,-z-1/2 -x,y-1/2,z x,-y-1/2,z-1/2 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 O4 O-2 0.369 0.346 0.25 1 0.0 O3 O-2 0.124 0.604 -0.004 1 0.0 O6 O-2 0.408 -0.004 0.136 1 0.0 Ta3 Ta+5 0.3349 0.75 0 1 0.0 O1 O-2 0.09 0.484 0.138 1 0.0 K1 K+1 0.2056 0.6744 0.25 1 0.0 Ta2 Ta+5 0.3431 0.3659 0.137 1 0.0 Ta1 Ta+5 0.1615 0.0622 0.0765 1 0.0 O2 O-2 0.127 0.218 0.126 1 0.0 O7 O-2 0.394 0.749 0.111 1 0.0 O5 O-2 0.366 0.373 0.012 1 0.0