#------------------------------------------------------------------------------ #$Date: 2010-01-30 15:59:17 +0200 (Sat, 30 Jan 2010) $ #$Revision: 966 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/1000501.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_1000501 _chemical_name_systematic 'Lanthanum molybdenum oxide (7/7/30)' _chemical_formula_structural 'La7 Mo7 O30' _chemical_formula_sum 'La7 Mo7 O30' _publ_section_title ; Ab initio determination of the novel perovskite-related structure of La7 Mo7 O30 from powder diffraction ; _space_group_IT_number 148 _symmetry_space_group_name_Hall '-R 3' _symmetry_space_group_name_H-M 'R -3 :H' _[local]_cod_cif_authors_sg_H-M 'R -3 H' loop_ _publ_author_name 'Goutenoire, F' 'Retoux, R' 'Suard, E' 'Lacorre, P' _journal_name_full 'Journal of Solid State Chemistry' _journal_coden_ASTM JSSCBI _journal_volume 142 _journal_year 1999 _journal_page_first 228 _journal_page_last 235 _cell_length_a 17.00639(20) _cell_length_b 17.00639(20) _cell_length_c 6.8613(1) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 1718.5 _cell_formula_units_Z 3 _symmetry_cell_setting trigonal loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-y,x-y,z' 'y-x,-x,z' '-x,-y,-z' 'y,y-x,-z' 'x-y,x,-z' '1/3+x,2/3+y,2/3+z' '2/3+x,1/3+y,1/3+z' '1/3-y,2/3+x-y,2/3+z' '2/3-y,1/3+x-y,1/3+z' '1/3-x+y,2/3-x,2/3+z' '2/3-x+y,1/3-x,1/3+z' '1/3-x,2/3-y,2/3-z' '2/3-x,1/3-y,1/3-z' '1/3+y,2/3-x+y,2/3-z' '2/3+y,1/3-x+y,1/3-z' '1/3+x-y,2/3+x,2/3-z' '2/3+x-y,1/3+x,1/3-z' loop_ _atom_type_symbol _atom_type_oxidation_number La3+ 3.000 Mo6+ 5.571 O2- -2.000 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 La1 La3+ 3 a 0. 0. 0. 1. 0 d Mo1 Mo6+ 3 b 0. 0. 0.5 1. 0 d La2 La3+ 18 f 0.7800(1) -0.0167(1) 0.3342(4) 1. 0 d Mo2 Mo6+ 18 f 0.2001(1) 0.0131(2) 0.1660(6) 1. 0 d O1 O2- 18 f 0.248(1) 0.089(1) 0.343(2) 1. 0 d O2 O2- 18 f 0.293(1) 0.039(1) -0.003(2) 1. 0 d O3 O2- 18 f 0.182(1) 0.124(1) 0.014(3) 1. 0 d O4 O2- 18 f 0.204(1) -0.075(1) 0.319(2) 1. 0 d O5 O2- 18 f 0.036(1) 0.104(1) 0.319(2) 1. 0 d _refine_ls_R_factor_all 0.0515 _cod_database_code 1000501