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Rezümékötet 2008. - vmtdk

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64<br />

É L E T T E L E N T E R M É S Z E T T U D O M Á N Y O K<br />

É S M Û S Z A K I T U D O M Á N Y O K<br />

the corresponding metal nitrate solution in methanol, in the presence of triethyl orthoformate. Triethyl orthoformate,<br />

beside of its dehydration ability, is a ligand forming agent, too. In spite of the fact that the position of solvent (Me-<br />

OH) in complex 2 is different from that of in the complexes 1 and 3, the thermal decomposition mechanism of the<br />

compounds is very similar.<br />

Keywords: thermal decomposition, N,N’– bis(4–acetyl–3–amino–5–methylpyrazole–3–il)formamidine, cobalt(II),<br />

copper(II), nickel(II) nitrate, molecular structure<br />

TERMIÈKA DEKOMPOZICIJA SOLVATNIH KOMPLEKSA<br />

SA ISTIM LIGANDIMA<br />

Autor: Berta HOLO doktorant<br />

Mentor: dr Vukadin LEOVAC dopisni èlan VANU;<br />

dr Katalin MESAROŠ SEÈENJI redovni profesor<br />

Institucija: Univerzitet u Novom Sad, Prirodno-matematièki fakultet, Departman za hemiju, Novi Sad<br />

Cilj naših dugoroènih istraživanja je odreðivanje mehanizma termièke dekompozicije metalnih kompleksa u zavisnosti<br />

od strukture. U ovom saopštenju diskutujemo mehanizam termièke razgradnje kompleksa kobalta(II), bakra(II)<br />

i nikla(II) koordinacionih formula [Co(ampf)(NO 3)(MeOH) 2]NO 3 (1), [Cu(ampf)(NO 3) 2(MeOH)] MeOH (2)<br />

i [Ni(ampf)(NO 3) (MeOH) 2]NO 3 (3). Ligand ampf = N,N’–bis(4–acetil–3–amino–5–metilpirazol–3–il)formamidin<br />

nastaje in situ, reakcijom metanolnog rastvora 4–acetil–3–amino–5–metilpirazola i nitrata metala u prisustvu trietilortoformata.<br />

Trietilortoformat, pored dehidratacionog svojstva, uèestvuje i u formiranju liganda. Bez obzira što je položaj<br />

solventa (MeOH) u molekulskoj strukturi kompleksa 2 razlièit u odnosu na komplekse 1 i 3, mehanizam termièke<br />

dekompozicije jedinjenja je veoma slièan.<br />

Kljuène reèi: termièka dekompozicija, N,N’–bis(4–acetil–3–amino–5–metilpirazol–3–il)formamidin, kobalt(II), bakar(II),<br />

nikl(II) nitrat, molekulska struktura<br />

V I I . V A J D A S Á G I M A G Y A R T U D O M Á

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