Self-assembled molecular rods and squares with chalcogenadiazole framework ligands

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dc.contributor.authorHassan, Mohammad Rokib
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorBoeré, René T.
dc.date.accessioned2012-04-24T22:16:59Z
dc.date.available2012-04-24T22:16:59Z
dc.date.issued2010
dc.descriptionxvii, 152 leaves : ill. (some col.) ; 29 cmen_US
dc.description.abstractDuring the attempts to carry out Suzuki coupling reactions, the σ-bonded Pd−Caryl benzochalcogenadiazolyl complexes trans-[ClPd(PPh3)2(C6H2BrN2E)] (E = S, Se) were isolated. The corresponding bromo derivatives were also synthesized on purpose to investigate their activity in Stille coupling reactions. A head-to-tail dimer trans- [{ClPd(PPh3)(μ-C6H2BrN2Se)}2] was synthesized from the thermolysis of trans- [ClPd(PPh3)2(C6H2BrN2Se)] in the presence of SeO2. The reduction potentials of the mononuclear and dinuclear complexes were measured by cyclic voltammetry (CV) and square wave voltammetry (SWV). 4,7-bis(2/4-pyridyl)benzochalcogenadiazole ligands were synthesized by Stille coupling reactions and the 1,5-bis(4-pyridyl)naphthalene ligand was prepared by a Suzuki coupling reaction. Reactions of the labile complex [BrRe(CO)4(NCMe)] with 4,7-bis(4- pyridyl)benzochalcogenadiazole ligands in a 2:1 ratio afforded self-assembled molecular rods [{ReBr(CO)4}2(μ-4,7-bis(4-pyridyl)benzochalcogenadiazoles)]. Palladium directed molecular squares [(enPd)(μ-4,7-bis(4-pyridyl)benzochalcogenadiazole)]4[PF6]8 were prepared by reactions of enPd(PF6)2 and 4,7-bis(4-pyridyl)benzochalco-genadiazoles in a 1:1 ratio. The optoelectronic properties of the ligands and the molecular rods were investigated by CV and SWV, and by luminescence spectroscopy. The optical properties of the square complexes were also studied by luminescence spectroscopy.en_US
dc.identifier.urihttps://hdl.handle.net/10133/2639
dc.language.isoen_USen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Chemistry and Biochemistry, c2010en_US
dc.publisher.departmentDepartment of Chemistry and Biochemistryen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectHeterocyclic chemistryen_US
dc.subjectChemistry, Organicen_US
dc.subjectNanostructured materials -- Synthesisen_US
dc.subjectSelf-assembly (Chemistry)en_US
dc.subjectLigandsen_US
dc.subjectPalladium compoundsen_US
dc.subjectSelenium compoundsen_US
dc.subjectRhenium compoundsen_US
dc.subjectOrganic compounds -- Synthesisen_US
dc.subjectDissertations, Academicen_US
dc.titleSelf-assembled molecular rods and squares with chalcogenadiazole framework ligandsen_US
dc.typeThesisen_US
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