Preferential Coordination of Mercury(II) to Oxygen over Sulfur Atoms in a Tropone-Attached Dithiocrown Ether

Abstract

5,8,11,14-Tetraoxa-2,17-dithiabicyclo[16.4.1]tricosa-1(22),18,20-trien-23-one (C17H24O5S2) forms an endocyclic 1:1-complex with [HgCl2]. The mercury(II) ion is surrounded by four ethereal O atoms and one S atom. The mesomeric effect lowers the basicity of the sulfur atoms on the tropone ring making them less likely to act as ligand atoms.