Naslov
Reactions of vanadium(III) with thiosemicarbazones

Autori
Rubčić, Mirta ; Cindrić, Marina ; Đilović, Ivica

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

Izvornik
Book of Abstracts, CHTB 2006 / Szacilowski, Konrad ; Stochel, Grazyna - Krakov : Drukarnia, Uniwersytetu Jagiellonskiego, 2006, P-33

Skup
3rd Central European Conference Chemistry towards Biology

Mjesto i datum
Kraków, Poljska, 08.09.2006. - 12.09.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Thiosemicarbazones; vanadium(III) acetylacetonate; IR spectroscopy; X-ray powder diffraction; single crystal X-ray diffraction

Sažetak
Thiosemicarbazones found wide application in industry and analytical chemistry, while some of their derivatives show antiparasital and antiviral properties. In many cases biological activity of thiosemicarbazones is related to their chelating properties, since they can be in vivo coordinated to metal ions. In the solid state thiosemicarbazones exist in the thione form. In solution, however, they tautomerize into the thiol form. Complexation usually takes place via sulfur atom and imino nitrogen atom, resulting in the formation of a five-membered chelate ring. When an additional donor site D is present in ortho position in such ligands D, N, S tricoordination usually takes place. In our recent work we have performed reactions of vanadium(III) acetylacetonate with salicyaldehyde-4-phenylthiosemicarbazone (H2L1) and o-vaniline-4-phenylthiosemicarbazone (H2L2). All reactions were carried under inert atmosphere. Reactions afforded thiosemicarbazonato complexes of vanadium(V) of general formula [VO(L)(OCH3)] (A), as well as unexpected products of intermolecular cyclization of thiosemicarbazone ligands and acetylacetone (B). All compounds were characterised by means of IR spectroscopy, X-ray powder diffraction and single crystal X-ray diffraction methods.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA