Small molecule activation by iridium complexes supported by a monoanionic NNN-pincer ligand

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dc.contributor.authorDrescher, Sam L.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorHayes, Paul G.
dc.date.accessioned2023-11-02T16:34:01Z
dc.date.available2023-11-02T16:34:01Z
dc.date.issued2023
dc.degree.levelMasters
dc.description.abstractThe synthesis of iridium 1,5-cyclooctadiene and cyclooctene complexes supported by a monoanionic NNN-pincer ligand is described. The 1,5-cyclooctadiene complexes, ArLIr(COD) (L = 2,5-(iPr2P=NAr)2C4H2N, Ar = Pipp, Dipp, Mes, COD = 1,5-cyclooctadiene) did not react with dihydrogen or silanes, precluding further work into catalytic processes, such as alkane dehydrogenation and hydrosilylation. As such, a more reactive species was sought. PippLIr(COE) (COE = cyclooctene) reacted with dihydrogen and silanes, allowing the synthesis of PippLIr(H)2 and PippLIr(H)(SiR3) (R3 = Et3, HPh2, H2Ph). These complexes were characterized by multinuclear (1H, 13C{1H}, 29Si, 31P{1H}) and 2-dimensional NMR spectroscopy, X-ray crystallography, and elemental analysis. Alternatives to PippLIr(COE), including PippLIr(CO), PippLIr(PPh3), and others were investigated. This was undertaken to avoid competing reactivity with free COE in solution. The efficacy of PippLIr(H)2 and PippLIr(H)(SiR3) (R3 = Et3, HPh2, H2Ph) as catalysts for alkene hydrogenation and alkane dehydrogenation, and hydrosilylation, respectively, was explored.
dc.identifier.urihttps://hdl.handle.net/10133/6616
dc.language.isoen
dc.proquest.subject0488
dc.proquest.subject0490
dc.proquestyesYes
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Chemistry and Biochemistry
dc.publisher.departmentDepartment of Chemistry and Biochemistry
dc.publisher.facultyArts and Science
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)
dc.subjectiridium
dc.subjectNNN-pincer ligand
dc.subjectorganometallic chemistry
dc.subject.lcshOrganometallic chemistry--Research
dc.subject.lcshOrganometallic compounds--Research
dc.subject.lcshIridium--Research
dc.subject.lcshIridium compounds--Research
dc.subject.lcshChelates
dc.subject.lcshLigands
dc.subject.lcshDissertations, Academic
dc.titleSmall molecule activation by iridium complexes supported by a monoanionic NNN-pincer ligand
dc.typeThesis
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