#------------------------------------------------------------------------------ #$Date: 2008-01-26 14:05:32 +0100 (Sat, 26 Jan 2008) $ #$Revision: 19 $ #$URL: svn://www.crystallography.net/cod/cif/1/1008430.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_1008430 _chemical_name_systematic 'Caesium triarsenidosilicate' _chemical_formula_structural 'Cs5 (Si As3)' _chemical_formula_sum 'As3 Cs5 Si' _publ_section_title ; C O~3~^2-^ - isostere Anionen in Cs~5~ Si P~3~, Cs~5~ Si As~3~, Cs~5~ Ge P~3~ und Cs~5~ Ge As~3~ ; loop_ _publ_author_name 'Eisenmann, B' 'Klein, J' 'Somer, M' _journal_name_full 'Angewandte Chemie (German Edition)' _journal_coden_ASTM ANCEAD _journal_volume 102 _journal_year 1990 _journal_page_first 92 _journal_page_last 93 _cell_length_a 14.467(4) _cell_length_b 6.043(2) _cell_length_c 15.820(4) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1383.0 _cell_formula_units_Z 4 _symmetry_space_group_name_H-M 'P n m a' _symmetry_Int_Tables_number 62 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,1/2-y,1/2-z' '-x,1/2+y,-z' '1/2-x,-y,1/2+z' '-x,-y,-z' '1/2-x,1/2+y,1/2+z' 'x,1/2-y,z' '1/2+x,y,1/2-z' loop_ _atom_type_symbol _atom_type_oxidation_number Cs1+ 1.000 Si4+ 4.000 As3- -3.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Cs1 Cs1+ 4 c 0.5675(1) 0.25 0.4523(1) 1. 0 d Cs2 Cs1+ 4 c 0.6201(1) 0.25 0.6864(1) 1. 0 d Cs3 Cs1+ 4 c 0.8550(1) 0.25 0.5497(1) 1. 0 d Cs4 Cs1+ 4 c 0.2791(1) 0.25 0.2041(1) 1. 0 d Cs5 Cs1+ 4 c 0.0508(1) 0.25 0.3450(1) 1. 0 d Si1 Si4+ 4 c 0.2604(3) 0.25 0.5666(3) 1. 0 d As1 As3- 4 c 0.1044(1) 0.25 0.5877(1) 1. 0 d As2 As3- 4 c 0.3035(1) 0.25 0.4290(1) 1. 0 d As3 As3- 4 c 0.3675(1) 0.25 0.6769(1) 1. 0 d loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_22 _atom_site_aniso_U_23 _atom_site_aniso_U_33 Cs1 0.0256(5) 0. -0.0012(4) 0.0269(5) 0. 0.0324(5) Cs2 0.0369(6) 0. 0.0009(4) 0.0261(5) 0. 0.0202(5) Cs3 0.0272(5) 0. -0.0032(5) 0.0260(6) 0. 0.0376(6) Cs4 0.0356(6) 0. -0.0021(4) 0.0235(5) 0. 0.0221(5) Cs5 0.0354(7) 0. -0.0081(6) 0.0414(8) 0. 0.0517(8) Si1 0.0157(17) 0. -0.0007(15) 0.0140(18) 0. 0.0179(18) As1 0.0149(7) 0. 0.0008(6) 0.0283(9) 0. 0.0200(7) As2 0.0200(7) 0. 0.0037(6) 0.0280(9) 0. 0.0177(7) As3 0.0228(8) 0. -0.0120(7) 0.0261(9) 0. 0.0253(3) _refine_ls_R_factor_all 0.0539