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dc.creatorSovilj, Sofija P.
dc.creatorVučković, Gordana
dc.creatorBabić-Samardžija, Ksenija
dc.creatorMatsumoto, N.
dc.creatorJovanović, Vladislava M.
dc.creatorMrozinski, J.
dc.date.accessioned2020-09-16T09:15:53Z
dc.date.available2020-09-16T09:15:53Z
dc.date.issued1999
dc.identifier.issn0094-5714
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/3672
dc.description.abstractA new dinuclear cobalt(II) complex, [Co2(ox)tpmc](ClO4)2 3H2O, (tpmc = N, N′, N″, N″′-tetrakis(2-pyridylmethyl)-1, 4, 8, 11-tetraazacyclotetradecane, ox2 -oxalate ion), has been synthesized and its crystal structure solved by single crystal X-ray diffraction studies. It crystallizes in the monoclinic system, space group P21, with a = 97558(8) A, b = 21.455(2) A, c - 21.241(2) A, β=100.069(8)°, V=4391.0(8) A3, Z =4,R = 0.083, Rw = 0.086. Its structure consists of two dinuclear, crystallographically unique molecules in which the oxalate ion bridges two cobalt(II) ions unsymmetrically. E:ach cobalt is hexa-coordinated with four macrocyclic nitrogens and two oxygens in an octahedral arrangement of an “em” coordination of a macrocyclic ligand. The third oxygen is simultaneously bonded to both cobalt ions and the last one remains uncoordinated, which is the unique way of oxalato ion coordination. Intramolecular antiferromagnetic coupling between the two cobalt(II) ions is observed and yielded J = -9.3 an−1, g - 5.64 and g = 1.21. The variable temperature (4.2-192 K) inagiietic susceptibility nieasureinents are interpreted on the basis of the spin lamiltonian H 25/9JSASB + goβHz(SAZ - SBZ). Cyclic voltanllnetiy suggests that the complex is electrochcmically stable up to the potential of the cobalt reduction.en
dc.publisherTaylor and Francis
dc.relationMinistry of Science and Technology of Republic of Serbia
dc.relationPolish State Commitee for Scientific Research (Project No. 3T09A06308)
dc.rightsrestrictedAccess
dc.sourceSynthesis and Reactivity in Inorganic and Metal-Organic Chemistry
dc.subjectMagnetic properties
dc.subjectdinuclear complex
dc.subjectX-ray difraction
dc.subjectantiferromagnetic coupling
dc.subjectCyclic voltanllnetiy
dc.titleSynthesis, crystal structure, magnetic properties and cyclic voltammetry of the unsymmetric (μ-oxalato)-[N,N′,N″,N‴-tetrakis-(2-pyridylmethyl)-1,4,8, 11-tetraazacyclotetra-decane]dicobalt(II) perchlorate trihydrateen
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractСовиљ, Софија П.; Јовановић, Владислава М.; Матсумото, Н.; Мрозински, Ј.; Бабић-Самарджија, Ксенија; Вучковић, Гордана;
dc.citation.volume29
dc.citation.issue5
dc.citation.spage785
dc.citation.epage803
dc.identifier.doi10.1080/00945719909349487
dc.identifier.scopus2-s2.0-0038832776
dc.type.versionpublishedVersion


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