#------------------------------------------------------------------------------ #$Date: 2017-09-03 20:29:29 +0100 (Sun, 03 Sep 2017) $ #$Revision: 200144 $ #$URL: svn://www.crystallography.net/cod/cif/1/00/03/1000305.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_1000305 loop_ _publ_author_name 'Hemon, A.' 'Courbion, G.' _publ_section_title ; Synthesis and crystal structures of \b-NaSrCrF~6~ and NaSrFeF~6~. Structural correlations with A~2~MF~6~ compounds ; _journal_coden_ASTM EJSCE5 _journal_name_full ; European Journal of Solid State and Inorganic Chemistry ; _journal_page_first 519 _journal_page_last 531 _journal_volume 29 _journal_year 1992 _chemical_formula_structural 'Na Sr (Cr F6)' _chemical_formula_sum 'Cr F6 Na Sr' _chemical_name_systematic ; Sodium strontium hexafluorochromate(III) - \b ; _space_group_IT_number 14 _symmetry_cell_setting monoclinic _symmetry_Int_Tables_number 14 _symmetry_space_group_name_Hall '-P 2ybc' _symmetry_space_group_name_H-M 'P 1 21/c 1' _cell_angle_alpha 90 _cell_angle_beta 93.201(6) _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 5.5676(3) _cell_length_b 9.2937(7) _cell_length_c 9.5858(5) _cell_volume 495.2 _refine_ls_R_factor_all 0.03 _cod_database_code 1000305 loop_ _symmetry_equiv_pos_as_xyz x,y,z -x,1/2+y,1/2-z -x,-y,-z x,1/2-y,1/2+z 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 Sr1 0.0107(1) 0.0004(1) 0.0005(1) 0.0084(1) 0.0004(1) 0.0094(1) Cr1 0.0086(2) 0.0003(1) 0.0007(1) 0.0092(2) -0.0002(1) 0.0063(2) Na1 0.0173(6) 0.0002(5) 0.0035(7) 0.0151(6) 0.0028(7) 0.0624(11) F1 0.0165(8) 0.0010(7) 0.0103(7) 0.0228(9) 0.0029(7) 0.0177(8) F2 0.0268(9) -0.0035(7) -0.0099(7) 0.0134(8) 0.0073(7) 0.0213(9) F3 0.0203(8) 0.0027(8) 0.0148(7) 0.0221(10) 0.0111(8) 0.0264(9) F4 0.0187(8) 0.0005(7) 0.0009(7) 0.0168(8) -0.0100(7) 0.0207(9) F5 0.0216(9) -0.0048(8) -0.0084(8) 0.0225(10) -0.0056(8) 0.0257(10) F6 0.0145(7) 0.0019(6) -0.0002(6) 0.0130(7) 0.0020(6) 0.0141(7) 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 Sr1 Sr2+ 4 e 0.23779(4) 0.82376(3) 0.99032(2) 1. 0 d Cr1 Cr3+ 4 e 0.2303(1) 0.41834(4) 0.76361(4) 1. 0 d Na1 Na1+ 4 e 0.7219(3) 0.5473(2) 0.8784(2) 1. 0 d F1 F1- 4 e 0.4690(3) 0.4770(2) 0.6398(2) 1. 0 d F2 F1- 4 e 0.8534(3) 0.7635(2) 0.8553(2) 1. 0 d F3 F1- 4 e 0.9886(3) 0.3688(2) 0.8860(2) 1. 0 d F4 F1- 4 e 0.6874(3) 0.4159(2) 0.1249(2) 1. 0 d F5 F1- 4 e 0.4690(4) 0.1842(2) 0.3689(2) 1. 0 d F6 F1- 4 e 0.9968(3) 0.5248(2) 0.6510(2) 1. 0 d loop_ _atom_type_symbol _atom_type_oxidation_number Sr2+ 2.000 Cr3+ 3.000 Na1+ 1.000 F1- -1.000