#------------------------------------------------------------------------------ #$Date: 2016-02-18 17:37:37 +0200 (Thu, 18 Feb 2016) $ #$Revision: 176729 $ #$URL: file:///home/coder/svn-repositories/cod/cif/1/00/88/1008853.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_1008853 loop_ _publ_author_name 'Eisenmann, B' 'Klein, J' 'Somer, M' _publ_section_title ; Crystal structure of tetrapotassium diarsenidocadmate ; _journal_coden_ASTM ZEKRDZ _journal_name_full ; Zeitschrift fuer Kristallographie (149,1979-) ; _journal_page_first 271 _journal_page_last 272 _journal_paper_doi 10.1524/zkri.1991.197.3-4.271 _journal_volume 197 _journal_year 1991 _chemical_formula_structural 'K4 (Cd As2)' _chemical_formula_sum 'As2 Cd K4' _chemical_name_systematic 'Tetrapotassium diarsenidocadmate' _space_group_IT_number 166 _symmetry_cell_setting trigonal _symmetry_space_group_name_Hall '-R 3 2"' _symmetry_space_group_name_H-M 'R -3 m :H' _cell_angle_alpha 90.(0) _cell_angle_beta 90.(0) _cell_angle_gamma 120.(0) _cell_formula_units_Z 3 _cell_length_a 5.797(2) _cell_length_b 5.797(2) _cell_length_c 27.724(6) _cell_volume 806.9 _refine_ls_R_factor_all 0.028 _cod_original_sg_symbol_H-M 'R -3 m H' _cod_database_code 1008853 loop_ _symmetry_equiv_pos_as_xyz x,y,z -y,x-y,z y-x,-x,z -y,-x,z x,x-y,z y-x,y,z -x,-y,-z y,y-x,-z x-y,x,-z y,x,-z -x,y-x,-z x-y,-y,-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-y,2/3-x,2/3+z 2/3-y,1/3-x,1/3+z 1/3+x,2/3+x-y,2/3+z 2/3+x,1/3+x-y,1/3+z 1/3-x+y,2/3+y,2/3+z 2/3-x+y,1/3+y,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 1/3+y,2/3+x,2/3-z 2/3+y,1/3+x,1/3-z 1/3-x,2/3-x+y,2/3-z 2/3-x,1/3-x+y,1/3-z 1/3+x-y,2/3-y,2/3-z 2/3+x-y,1/3-y,1/3-z 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 K1 K1+ 6 c 0. 0. 0.20859(10) 1. 0 d K2 K1+ 6 c 0. 0. 0.39171(10) 1. 0 d Cd1 Cd2+ 3 a 0. 0. 0. 1. 0 d As1 As3- 6 c 0. 0. 0.0892(1) 1. 0 d loop_ _atom_type_symbol _atom_type_oxidation_number K1+ 1.000 Cd2+ 2.000 As3- -3.000