Naslov
Oxovanadium(V) Complexes with Thiosemicarbazone Ligands: Formation of Thiadiazole and Thiazoline Derivatives by Vanadium Induced Cyclization

Autori
M. Rubčić, M. Cindrić, I. Đilović, V. Tomišić, P. Novak, T. Hrenar

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
Gordon Conference

Mjesto i datum
Ventura (CA), Sjedinjene Američke Države, 2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Oxovanadium; Thiosemicarbazone Ligands; Cyclization

Sažetak
In the reactions of selected thiosemicarbazones and VO(acac)2 we have detected and succesfully isolated three different reaction products. Amount of the particular kind of product is mainly dependent on duration of the reaction, solvent and nature of ligand (substituent R on aldehyde ring). Crystal and molecular structures of isolated compounds have been determined by single crystal X-ray diffraction methods. We have confirmed by UV experiments that oxidation of vanadium ion and formation of monomeric complex represents the first step of the reaction. We are still unaware of exact mechanism of both cyclization reactions, formation of thiazoline and thiadiazole ring, but we have strong indications confirmed by several experiments that role of vanadium is crucial for their occurance.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA