Preparation, Structural and Physical Studies of Mercury(Ii) Halide-Complexes with the N,N'-Chelating Biheteroaromatic Ligand 2-(2'-Pyridyl)Quinoxaline

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dc.contributor.authorKasselouri, S.en
dc.contributor.authorGaroufis, A.en
dc.contributor.authorPaschalidou, S.en
dc.contributor.authorPerlepes, S. P.en
dc.contributor.authorButler, I. S.en
dc.contributor.authorHadjiliadis, N.en
dc.date.accessioned2015-11-24T16:45:29Z
dc.date.available2015-11-24T16:45:29Z
dc.identifier.issn0020-1693-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8940
dc.rightsDefault Licence-
dc.subjectcrystal structuresen
dc.subjectmercury complexesen
dc.subjectbidentate ligand complexesen
dc.subjectchelate complexesen
dc.subjectdinuclear complexesen
dc.subjectmetal-amide bonden
dc.subjectcrystal-structureen
dc.subjectvibrational-spectraen
dc.subjectmolecular-structureen
dc.subjectspectroscopic propertiesen
dc.subjectcoordination-compoundsen
dc.subjectluminescenceen
dc.subjectperchlorateen
dc.subjectchemistryen
dc.titlePreparation, Structural and Physical Studies of Mercury(Ii) Halide-Complexes with the N,N'-Chelating Biheteroaromatic Ligand 2-(2'-Pyridyl)Quinoxalineen
heal.abstractThe mercury(II) complexes [Hg(2)X(4)L(2)] (X=Cl,Br) and [HgI(2)L], where L is 2-(2'-pyridyl)quinoxaline, have been prepared and studied by; a combination of conductivity measurements and FT-IR and far-IR, Raman and H-1 NMR spectroscopy. The structures of the free ligand L and [Hg(2)Cl(4)L(2)] have been determined from three-dimensional X-ray data collected by counter methods. Compound L crystallizes in space group P2(1)/c with a=4.163(2), b=16.953(4), c=14.509(3) Angstrom, beta=94.79(2)degrees and Z=4. The complex [Hg(2)Cl(4)L(2)] crystallizes in space group P2(1)/n with a=7.627(3), b=15.617(4), c=11.099(4), beta=92.03(3)degrees and Z=2. In free L, the pyridine nitrogen and the nearest quinoxaline nitrogen are located on the opposite side of the carbon-carbon bond which connects the two rings; the reverse conformation has been observed on complexation. The structure of [Hg(2)Cl(4)L(2)] consists of two Hg(II) centres bridged by two chloro ligands, with a terminal chloride and a chelating molecule of L completing five-coordination at each metal. The geometry at mercury is a distorted trigonal bipyramid with the bridging chlorides occupying apical and equatorial sites of each Hg(II) atom. The bromo compound is isostructural with [Hg(2)Cl(4)L(2)], while a monomeric pseudotetrahedral structure is assigned for the iodo complex in the solid state.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.secondary<Go to ISI>://A1994QA01000019-
heal.identifier.secondaryhttp://ac.els-cdn.com/0020169394041512/1-s2.0-0020169394041512-main.pdf?_tid=95603056626b851da85e6a49b03793ae&acdnat=1333029281_73ce094d325f03b5a2572921b84c4c57-
heal.journalNameInorganica Chimica Actaen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate1994-
heal.publisherElsevieren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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