Stereochemical and redox properties of palladium complexes of 1,4,10,13-tetrathia-7,16-diazacyclo-octadecane
Abstract
The square planar S4 donor complex [Pd(L1)]2+(L1= 7,16-dimethyl-1,4,10,13-tetrathia-7,16-diazacyclo-octadecane) shows a reversible PdII/I redox couple at E½–0.74 V vs. Fc/Fc+; in contrast, the complex [Pd(L2)]2+(L2= 1,4,10,13-tetrathia-7,16-diazacyclo-octadecane) shows distorted octahedral N2S2+ S2 co-ordination, and a reversible PdII/III couple at E½+0.57 V vs. Fc/Fc+(ferrocene/ferrocinium).