E Costa

The reactions of Me3SiCHN2 with [PtX2(S,S- skewphos)]: Highly diastereoselective carbene insertions into PtCl bonds, and Me3SiCHN2 as a CH2N2 equivalent

[PtCl2(S,S-skewphos)] reacts with Me3SiCHN2 in dry CH2Cl2 to give [PtCl(S-CHClSiMe3)(S,S- skewphos)] in high yield, but in the presence of water [Pt(CH2Cl)2)(S,S-skewphos)] is formed. Treatment of [PtCl(S- CHClSiMe3)(S,S-skewphos)] with NaI gives [PtI(CHISiMe3)(S,S-skewphos)] as a 1:1 mixture of diastereoisomers.

Further perspectives in organometallic photochemistry

Abstract This article discusses developments in two fields of organometallic chemistry: photochemistry of transition metal hydrides as a route to produce low valent transition metal compounds and the potential of photogenerated coordinatively and electronically unsaturated organometallic species to activate C-H bonds.

Remote interfacial electron transfer processes on nanocrystalline TiO2 sensitized with polynuclear complexes

The kinetic study of interfacial electron transfer in sensitized nanocrystalline semiconductor is essential to the design of molecular devices performing specific light induced functions in a microheterogeneous environment. A series of molecular assemblies performing direct and remote charge injection to the semiconductor have been discussed in the context of artificial photosynthesis. A particular attention in this article has been paid to the factors that control the interfacial electron transfer processes in nanocrystalline TiO2 films sensitized with mononuclear and polynuclear transition metal complexes.