Synthesis , Characterization and Electronichemical of 1,1-Diferrocenyl Disulfide compounds

• Main Authors: Tseng,Jiung Fu, 曾俊福
• Other Authors: Keh Shin Kwan
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/87006282824680117010

碩士 === 輔仁大學 === 化學學系 === 83 === Mono-bridged bis-sandwitch compounds and their metal complexes have been the potential candidates of three centered molecular switches.Electron transfer between the two iron nucleiu is not efficient due to the fact that the bridging system is too long and can't offer suitable Π orbital to overlap with metal d orbital,and that energy mismatch reflected in the insignificant difference in reduction potential, △E1/2= 0-75 mV. In this work ,diferrocenyl compounds (FeCpC5H4SMe)2PdCl2, (FeCpC5H4SPh)2 PdCl2 and (FeCpC5H4SCH2Ph)2PdCl2 were synthesized. Me-SMe- bridged compound shows two sets of reversible waves in its cyclic voltammogram. whereas the -SPh- and -SCH2Ph- bridged analogues show four sets.It has been found that good electronic communication,△E1/2= 255 mV,exists in all cases, and that the mixed-valence compound will be more stable if an electron donor envolved in the bridge. These information may shed new light in the design of molecular switching system.