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dc.creatorKosovic, Milica
dc.creatorJovanovic, Snezana
dc.creatorBogdanović, Goran A.
dc.creatorGiester, Gerald
dc.creatorJacimovic, Zeljko
dc.creatorBugarcic, Zivadin D.
dc.creatorPetrovic, Biljana
dc.date.accessioned2018-03-01T17:09:25Z
dc.date.available2018-03-01T17:09:25Z
dc.date.issued2016
dc.identifier.issn0095-8972 (print)
dc.identifier.issn1029-0389 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/1253
dc.description.abstractSubstitution reactions of [Pt(terpy)Cl](+) (terpy=2,2;6,2-terpyridine), [Pt(bpma)Cl](+) (bpma=bis(2-pyridylmethyl)amine), [Pt(dien)Cl](+) (dien=diethylenetriamine or 1,5-diamino-3-azapentane) and [Pt(tpdm)Cl](+) (tpdm=tripyridinedimethane) with nitrogen donor heterocyclic molecules, such as 3-amino-4-iodo-pyrazole (pzI), 5-amino-4-bromo-3-methyl-pyrazole (pzBr) and imidazole (Im), were studied in aqueous 0.10M NaClO4 in the presence of 10mM NaCl using variable-temperature UV-vis spectrophotometry. The second-order rate constants k(2) indicate decrease in reactivity in the order [Pt(terpy)Cl](+) GT [Pt(bpma)Cl](+) GT [Pt(tpdm)Cl](+) GT [Pt(dien)Cl](+). The most reactive nucleophile among the heterocyclic compounds is imidazole, while pzI shows slightly higher reactivity than pzBr. Activation parameters were also determined and the negative values for entropies of activation, S, support an associative mode of substitution for all substitution processes. Crystal structure of [Pt(bpma)(pzBr)]Cl(2)2H(2)O was determined by single-crystal X-ray analysis. The coordination geometry of the complex is distorted square-planar while the bond distance Pt-N2(pzBr) is longer than the other three Pt-N distances.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172011/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172014/RS//
dc.rightsrestrictedAccessen
dc.sourceJournal of Coordination Chemistryen
dc.subjectPt(II) complexesen
dc.subjectkineticsen
dc.subjectmechanismen
dc.subjectdiazinesen
dc.subjectreactivityen
dc.subjectdeformed coordination geometryen
dc.subjectcrystal structureen
dc.titleKinetics and mechanism of the substitution reactions of some monofunctional Pt(II) complexes with heterocyclic nitrogen donor molecules. Crystal structure of [Pt(bpma)(pzBr)]Cl-2 center dot 2H(2)Oen
dc.typearticleen
dcterms.abstractЈацимовиц, Зељко; Богдановић Горан; Косовиц, Милица; Гиестер, Гералд; Јовановиц, Снезана; Петровиц, Биљана; Бугарциц, Зивадин Д.;
dc.citation.volume69
dc.citation.issue19
dc.citation.spage2819
dc.citation.epage2831
dc.identifier.wos000384432400002
dc.identifier.doi10.1080/00958972.2016.1224336
dc.citation.rankM22
dc.identifier.scopus2-s2.0-84983541760


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