121Sb Mössbauer spectra for crown ether adducts of antimony(III) chloride and molecular structure of SbCl3·12-crown-4
Abstract
The 121Sb Mössbauer spectra for the crown ether (12-crown-4, 15-crown-5 and 18-crown-6) adducts of antimony(III) chloride at 20 K show that the stereochemical activity of the lone pair of the SbIII atom varys with the antimony–crown ether interaction, which is strongest in the 12-crown-4 adduct having the shortest average Sb–O distance of 2.81(7)Å.