#------------------------------------------------------------------------------ #$Date: 2008-01-26 13:05:32 +0000 (Sat, 26 Jan 2008) $ #$Revision: 19 $ #$URL: svn://www.crystallography.net/cod/cif/1/1008039.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_1008039 _chemical_name_systematic 'Barium hydrogenarsenatodichromate' _chemical_formula_structural 'Ba H (As Cr2 O10)' _chemical_formula_sum 'H As Ba Cr2 O10' _publ_section_title ; Un nouvel exemple d'anion du type (X Cr~2~ O~10~) (X=As). Structure de Ba H (As Cr~2~ O~10~) ; loop_ _publ_author_name 'Blum, D' 'Averbuch-Pouchot, M T' 'Guitel, J C' _journal_name_full 'Acta Crystallographica B (24,1968-38,1982)' _journal_coden_ASTM ACBCAR _journal_volume 35 _journal_year 1979 _journal_page_first 726 _journal_page_last 727 _cell_length_a 7.433(3) _cell_length_b 7.960(4) _cell_length_c 8.038(4) _cell_angle_alpha 115.91(5) _cell_angle_beta 99.41(5) _cell_angle_gamma 89.31(5) _cell_volume 421.1 _cell_formula_units_Z 2 _symmetry_space_group_name_H-M 'P -1' _symmetry_Int_Tables_number 2 _symmetry_cell_setting triclinic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,-z' loop_ _atom_type_symbol _atom_type_oxidation_number Ba2+ 2.000 As5+ 5.000 Cr6+ 6.000 O2- -2.000 H1+ 1.000 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 Ba1 Ba2+ 2 i 0.24926(9) 0.7109(1) 0.1304(1) 1. 0 d As1 As5+ 2 i 0.1753(1) 0.2855(1) 0.2383(1) 1. 0 d Cr1 Cr6+ 2 i 0.4022(3) 0.8118(3) 0.7099(3) 1. 0 d Cr2 Cr6+ 2 i 0.2184(5) 0.2583(5) 0.6214(5) 1. 0 d O1 O2- 2 i 0.076(1) 0.399(1) 0.123(1) 1. 1 d O2 O2- 2 i 0.123(1) 0.057(1) 0.140(1) 1. 1 d O3 O2- 2 i 0.404(1) 0.325(1) 0.265(1) 1. 0 d O4 O2- 2 i 0.133(1) 0.373(1) 0.464(1) 1. 0 d O5 O2- 2 i 0.325(1) 0.742(2) 0.490(2) 1. 0 d O6 O2- 2 i 0.250(1) 0.762(1) 0.806(2) 1. 0 d O7 O2- 2 i 0.464(1) 0.030(1) 0.817(1) 1. 0 d O8 O2- 2 i 0.365(2) 0.399(1) 0.809(2) 1. 0 d O9 O2- 2 i 0.049(1) 0.182(2) 0.672(2) 1. 0 d O10 O2- 2 i 0.331(2) 0.083(2) 0.491(2) 1. 0 d H1 H1+ 2 i -1. -1. -1. 1. 0 dum _refine_ls_R_factor_all 0.045