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dc.contributor.authorIngham, Scott Law
dc.date.accessioned2018-03-14T22:03:07Z
dc.date.available2018-03-14T22:03:07Z
dc.date.issued1991
dc.identifier.urihttp://hdl.handle.net/10179/12961
dc.description.abstractThe results reported in this thesis are an investigation into the coordination abilities of some multidentate ligands, the majority of which possess more than one type of donor atom. In Section One studies on the reactivity of triosmium cluster compounds with phenylthioureas and substituted triphenylphosphines are reported. Section Two details the results of studies on selected multidentate ligands containing phosphorus and nitrogen donor atoms. Section One Chapter 1 is a brief overview of osmium cluster compounds reported to date in the literature and in particular the reactions of triosmium clusters with organic substrates, organosulphur compounds and phosphines. In Chapter 2 the reactions of the 'lightly stabilised' triosmium cluster [Os3(CO)i 0(CH3CN)2] with phenylthiourea and diphenylthiourea are reported. Single crystal X-ray structural determinations were performed for the compounds [HOs3(CO) x(dptu)] (where x = 9, 10 dptu = diphenylthiourea). The photochemically induced decarbonylation of the clusters [HOs3(CO)io(L)] ( where L = phenylthiourea, diphenylthiourea) has also been investigated, with quantum yields and apparent activation energies reported. Detailed in Chapter 3 are the results of studies on the reactivity of triphenylphosphine ligands which possess aldehyde (2-PCHO, 4-PCHO) or amine (2-PNH2, 3-PNH2) substituents, with the triosmium clusters [Os3(C0)12-x(CH3CN)xJ (where x = 1, 2). A single crystal X-ray structural determination was performed on the complex [HOs3(C0)9(2-PNH)]. Section Two Chapter 4 is a brief overview of the use of multidentate ligands in forming coordination complexes with transition metals. The results of an investigation on the coordination complexes of Cu(l) and Ag(I) with the potentially tridentate ligands pyridine-2-carbaldehyde 2'-pyridylhydrazone and 2,2':6',2"-terpyridine are reported in Chapter 5. Many of these compounds have been shown by single crystal X-ray structural determinations to possess an unusual five coordinate stereochemistry at the metal centre. In Chapter 6 the results of studies on the coordination complexes of Cu(I) and Ni(II) with mixed phosphorus and nitrogen donor ligands are reported. These have been shown to form stable complexes where both the phosphorus and nitrogen donor atoms are coordinated.en_US
dc.language.isoenen_US
dc.publisherMassey Universityen_US
dc.rightsThe Authoren_US
dc.subjectLigandsen_US
dc.titleStructural studies on complexes with multidentate ligands : a dissertation presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Chemistry at Massey Universityen_US
dc.typeThesisen_US
thesis.degree.disciplineChemistryen_US
thesis.degree.grantorMassey Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophy (Ph. D.)en_US


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