Silicon porphyrins mechanisms

The electrosynthesis of metalloporphyrins which contain a metal-carbon a-bond is reviewed in this paper. The electron transfer mechanisms of a-bonded rhodium, cobalt, germanium, and silicon porphyrin complexes were also determined on the basis of voltammetric measurements and controlled-potential electrooxidation/reduction. The four described electrochemical systems demonstrate the versatility and selectivity of electrochemical methods for the synthesis and characterization of metal-carbon o-bonded metalloporphyrins. The reactions between rhodium and cobalt metalloporphyrins and the commonly used CH2CI2 is also discussed. 

Fig. 3.8 Two mechanical displacements of a porphyrin rock by a tip in the tapping mode on a zirconium(IV)-alizarin S-covered silicon substrate (a) three-dimensional image, (b) two-dimensional image.

---