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Proučavanje novih kompleksa kobalta(II) sa oktaazamakrociklom i aminokarboksilatima ili njihovim derivatima

dc.creatorVučković, Gordana
dc.creatorTanasković, Slađana B.
dc.creatorAntonijević-Nikolić, Mirjana
dc.creatorŽivković-Radovanović, Vukosava
dc.creatorGojgić-Cvijović, Gordana
dc.date.accessioned2019-01-30T17:19:39Z
dc.date.available2019-01-30T17:19:39Z
dc.date.issued2009
dc.identifier.issn0352-5139
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/504
dc.description.abstractFour new air-stable mixed-ligand Co(II) complexes having the general formula [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-methylglycine/N,N-dimethylglycine, Z = - 4BF , qH2O=4 or 3; HY=S-norvaline/S-valine Z=-ClO4 , qCH3CN = 0.5; qH2O = 0.5; tpmc = N,N',N'',N'''-tetrakis(2-pyridylmethyl)- -1,4,8,11-tetraazacyclotetradecane) were prepared. The composition, some physical and chemical properties and their tentative geometries were evaluated based on elemental analysis (C, H, N), conductometric and magnetic measurements, spectroscopic data (UV/Vis, IR) and cyclic voltammetry. The data were compared with earlier described analogous complexes containing the macrocyclic ligand and aliphatic aminocarboxylates. It is assumed that all complexes are binuclear with an exo coordination mode of the octaazamacrocyclic pendant ligand in the boat conformation. In addition, two -N-(CH2)2-N- portions of the cyclam ring within the tpmc ligand and Co(II) ions in the high-spin state are most probably bridged via oxygen atoms from the anion of the aminocarboxylate/derivatives, whereas nitrogen atoms rest uncoordinated. In all cases, a combined chelate-bridged coordination is proposed as the most probable. The complexes were electrochemically stable in the potential range -1.0 to 1.0 V. They were also preliminary assayed toward some microorganisms together with the ligands, starting simple salts and solvents as test substances. In some cases, certain antimicrobial activity of the complexes was detected.en
dc.description.abstractDobijena su četiri nova mešovito-ligandna kompleksa Co(II), stabilna na vazduhu, opšte formule [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-metilglicin/N,N-dimetilglicin, Z=-4BF , qH2O=4 ili 3); HY = S-norvalin/S-valin, Z=-ClO4, qCH3CN=0,5; qH2O=0,5; tpmc= N,N',N'',N'''-tetrakis(2-piridilmetil)-1,4,8,11-tetraazaciklotetradekan). Sastav, neka fizička i hemijska svojstva i njihove približne geometrije su izvedene na osnovu elementalne analize (C, H, N), konduktometrijskih i magnetnih merenja, spektroskopskih podataka (UV/Vis, IR) odnosno ciklične voltametrije. Podaci su upoređeni sa ranije opisanim analogim kompleksima koji sadrže makrociklični ligand i alifatične aminokarboksilate. Pretpostavljeno je da su svi kompleksi dinuklearni sa egzo koordinacijom pendantnog oktaazamakrocikla u konformaciji lađe. Pored dva -N-(CH2)2-N- dela ciklamovog prstena unutar tpmc-a, joni visoko-spinskog Co(II) su najverovatnije premošćeni angažovanjem kiseonikovih atoma sa anjona aminokarboksilata/derivata, dok atomi azota ostaju nekoordinovani. Za sve komplekse predložen je kombinovani helatno-mostovni način vezivanja. Kompleksi su bili elektrohemijski stabilni u opsegu potencijala -1,0 do 1,0 V. Oni su preliminarno testirani na mikroorganizme zajedno sa ligandima, polaznim prostim solima i rastvaračima kao test supstancama. U nekim slučajevima je nađena izvesna antimikrobna aktivnost kompleksa.sr
dc.publisherSerbian Chemical Society
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142028/RS//
dc.rightsopenAccess
dc.sourceJournal of the Serbian Chemical Society
dc.subjectcobalt(II) complexesen
dc.subjectpendant octaazamacrocycleen
dc.subjectaminocarboxylates and derivativesen
dc.titleA study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivativesen
dc.titleProučavanje novih kompleksa kobalta(II) sa oktaazamakrociklom i aminokarboksilatima ili njihovim derivatimasr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractAнтонијевић-Николић, Мирјана; Танасковић, Слађана Б.; Живковић-Радовановић, Вукосава; Гојгић Цвијовић, Гордана; Вучковић, Гордана; Проучавање нових комплекса кобалта(ИИ) са октаазамакроциклом и аминокарбоксилатима или њиховим дериватима; Проучавање нових комплекса кобалта(ИИ) са октаазамакроциклом и аминокарбоксилатима или њиховим дериватима;
dc.citation.volume74
dc.citation.issue6
dc.citation.spage629
dc.citation.epage640
dc.citation.other74(6): 629-640
dc.citation.rankM23
dc.identifier.doi10.2298/JSC0906629V
dc.identifier.rcubConv_265
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs//bitstream/id/9149/502.pdf
dc.identifier.scopus2-s2.0-68949180355
dc.identifier.wos000268739700003
dc.type.versionpublishedVersion


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