Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0020-1693(03)00198-1
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dc.titleSyntheses, characterization and thermal properties of [M(Spy)2(SpyH)2] (M = Cd and Hg; Spy- = pyridine-4-thiolate; SpyH = pyridinium-4-thiolate)) and [M(SpyH)4](ClO4)2 (M = Zn, Cd and Hg)
dc.contributor.authorAnjali, K.S.
dc.contributor.authorVittal, J.J.
dc.contributor.authorDean, P.A.W.
dc.date.accessioned2014-10-16T08:42:50Z
dc.date.available2014-10-16T08:42:50Z
dc.date.issued2003-07-22
dc.identifier.citationAnjali, K.S., Vittal, J.J., Dean, P.A.W. (2003-07-22). Syntheses, characterization and thermal properties of [M(Spy)2(SpyH)2] (M = Cd and Hg; Spy- = pyridine-4-thiolate; SpyH = pyridinium-4-thiolate)) and [M(SpyH)4](ClO4)2 (M = Zn, Cd and Hg). Inorganica Chimica Acta 351 (1) : 79-88. ScholarBank@NUS Repository. https://doi.org/10.1016/S0020-1693(03)00198-1
dc.identifier.issn00201693
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/95016
dc.description.abstractThe complexes [M(Spy)2(SpyH)2] (Spy-=pyridine-4-thiolate; M=Cd (1) and Hg (2)), of a hitherto unknown type, were prepared by reacting the corresponding metal perchlorates with pyridine-4-thiol in the ratio 1:6 in DMSO-MeOH. The cations [M(SpyH)4]2+ (M=Zn, Cd and Hg) were prepared by a similar reaction, but with M-pySH=1:4 in MeOH, and isolated as their perchlorate salts, 3, 4 and 5. The structures of 1-5 were determined by X-ray crystallography. Both compounds 1 and 2, and the cations in 3-5, are mononuclear complexes in which the metal centre adopts a distorted MS4 kernel. Intermolecular N-H⋯N hydrogen bonds in 1 and 2 lead to one dimensional polymeric chain structures, and similarly N-H⋯O⋯H-N hydrogen bonds between the cations and anions in 3-5 result in chain structures. Thermogravimetric and pyrolysis experiments demonstrate that 1 and 2 decompose to give the corresponding metal sulfides. Metal (113Cd/199Hg (as appropriate)) NMR spectra have been measured for solutions of 4 and 5 with and without incremental addition of NaOMe. Separate signals were not observed for [M(SpyH)n(Spy)4-n](n-2)+, even at the lowest accessible temperature. The changes in metal NMR chemical shift as [M(SpyH)4]2+ is converted into [M(Spy)4]2- are surprisingly small. © 2003 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0020-1693(03)00198-1
dc.sourceScopus
dc.subject4-Pyridinethiol
dc.subject4-Pyridiniumthiolate
dc.subjectCrystal structures
dc.subjectGroup 12 metal complexes
dc.subjectMetal NMR
dc.subjectPyridine-4-thiol
dc.subjectPyridine-4-thiolate
dc.subjectThermogravimetric analysis
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1016/S0020-1693(03)00198-1
dc.description.sourcetitleInorganica Chimica Acta
dc.description.volume351
dc.description.issue1
dc.description.page79-88
dc.description.codenICHAA
dc.identifier.isiut000184441200012
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