M.Sc. / Please refer to full text to view abstract

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Thesis (PhDAppliedScience)--University of South Australia, 2003.

Thesis (PhDAppliedScience)--University of South Australia, 2003.

Thesis (M.S.)--University of Louisville, 2004. / Department of Chemistry. Vita. "May 2004." Includes bibliographical references (leaves 55-59).

Thesis (Ph. D.)--State University of New York at Binghamton, Chemistry Department, 2006. / Includes bibliographical references.

The mechanism or a thermal amino group transfer-fragmentation reaction yielding carboxyamides from mixed phosphoric-carboxylic anhydrides (RO(R¹R²N)P(O)OC(O)R³; R = R¹ = alkyl; R² = H, alkyl, aryl; R³ = alkyl, aryl) was elucidated from structure reactivity studies using a model system, R = R¹ = R² = Me, R³ = Ph. Kinetic data was obtained using ¹H nmr spectroscopy; MNDO molecular orbital and molecular mechanics calculations, and the crystal structure or N-methyl-2-benzoyloxy-2-oxo-1, 3, 2-oxazaphosphorinane (Pna2₁; a = 22.229(6)Å, b = 7.597(2)Å, c = 7.210(2)Å; v = 1217.6(6)ų. Final R = 3. 08% for 1037 reflections with I (rel )> 2αI (rel) and 15 7 parameters) were userul in providing additional in formation about the reaction mechanism .

published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy

Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2009 / The host compound 9-(4-methoxyphenyl)-9H-xanthen-9-01 (AI) forms inclusion compounds with the solid guests l -naphthylamine (NAPH), 8-hydroxyquinoline (HQ). acridine (ACRI), 1,4 - diazabicyclo[2.2.2]octane (DABCO) and a liquid guest benzaldehyde (BENZAL). All four structures AI·YzNAPH, AI· Y,HQ AI·ACRI and AI ·Y,DABCO were successfully solved in the triclinic space group P I . The structure of AI·Y,BENZAL was successfully solved in the monocl inic space group P2dn . Similar packin g motifs arise for the NAPH and HQ inclusion compounds where the main interaction is of the fonm (Host)-OH····O-(Host). Both the DABCO and the ACRI guests hydrogen bond to the host molecule. The host: guest ratios for A I·ACRI. AI· Y,NAPH. A I· Y,DABCO and A I· YzHQ were found using nuclear magnetic resonance (NMR) spectroscopy. The host:guest ratio for AI·YzBENZAL was found using thenmogravimetric analysis. Enthalpy changes of the inclusion compounds were monitored using differential scanning calorimetry (DSC). Kinetics of desolvation for AI·Y,BENZAL were conducted using a non - isothenmal method where we have obtained an activation energy range of 74 k J morl - 86 k J mor' . The solid - solid reaction kinetics for A I·Y,NAPH, A I· Y,HQ, AI·ACRI and AI ·Y,DABCO were determined at room temperature using powder X-ray diffraction (PXRD).

Au, Ching Chi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 83-89). / Abstracts in English and Chinese. / Table of contents --- p.i / Acknowledgements --- p.iii / Abbreviations --- p.iv / Abstract --- p.v / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Importance of Transition Metal Amido Complexes --- p.1 / Chapter 1.1.1 --- Transition Metal Amido Complexes as Catalysts --- p.1 / Chapter 1.1.2 --- Transition Metal Amido Complexes as Reaction Intermediates --- p.2 / Chapter 1.2 --- Bonding Nature of Late Transition Metal Amido Complexes --- p.4 / Chapter 1.2.1 --- Theory of π Conflict --- p.5 / Chapter 1.2.2 --- E-C Approach --- p.7 / Chapter 1.3 --- Synthesis of Transition Metal Amido Complexes --- p.8 / Chapter 1.3.1 --- Transmetallation --- p.9 / Chapter 1.3.2 --- Deprotonation of Coordinated Amine --- p.10 / Chapter 1.3.3 --- Hydride Addition across Organic Azide --- p.11 / Chapter 1.4 --- Reactivity of Transition Metal Amido Complexes --- p.12 / Chapter 1.4.1 --- β-Elimination --- p.12 / Chapter 1.4.2 --- Insertion --- p.13 / Chapter 1.4.3 --- Reductive Elimination --- p.16 / Chapter 1.4.4 --- Bond Activation --- p.17 / Chapter 1.5 --- Structural Features of Rhodium Porphyrin Complexes --- p.18 / Chapter 1.6 --- Examples of Metalloporphyrin Complexes Containing Nitrogen Ligands --- p.19 / Chapter 1.7 --- Bond Activation by Rhodium Porphyrins --- p.21 / Chapter 1.8 --- Objectives of the Work --- p.23 / Chapter Chapter 2 --- Synthesis and Reactivity Studies of Rhodium Porphyrin Amido Complexes --- p.24 / Chapter 2.1 --- Synthesis of Porphyrin and Rhodium Porphyrin Chloride --- p.24 / Chapter 2.2 --- Synthesis of Rhodium Porphyrin Amido Complexes from Rhodium Porphyrin Chloride --- p.24 / Chapter 2.2.1 --- By Transmetallation with Lithium Amide --- p.25 / Chapter 2.2.2 --- By Base-promoted Ligand Substitution Using Rh(ttp)Cl --- p.27 / Chapter 2.2.2.1 --- Optimization of Reaction Conditions --- p.27 / Chapter 2.2.2.2 --- Substrate Scope --- p.31 / Chapter 2.3 --- X-ray Structure of Rh(ttp)NHS02Ph --- p.33 / Chapter 2.4 --- Bond Activation Chemistry of Rh(ttp)NHS02Ph --- p.36 / Chapter 2.5 --- Conclusion --- p.37 / Chapter Chapter 3 --- Reactivity Studies of Rh(ttp)NHS02Ph --- p.39 / Chapter 3.1 --- Thermal Reaction of Rh(ttp)NHS02Ph in Benzene-d6 --- p.39 / Chapter 3.2 --- Mechanistic Studies of the Conversion from Rh(ttp)NHS02Ph to [Rh(ttp)]2 --- p.41 / Chapter 3.2.1 --- Mechansim A (Hydrolysis of Rh(ttp)NHS02Ph) --- p.42 / Chapter 3.2.2 --- Mechanism B (Rh-N Bond Homolysis - (PhS02NH)2 Hydrolysis) --- p.44 / Chapter 3.2.3 --- Mechanism C (Rh-N Bond Homolysis - (PhS02NH)2 Nitrogen-Hydrogen Bond Activation) --- p.45 / Chapter 3.3 --- Discussions --- p.52 / Chapter 3.3.1 --- Estimation of Rhodium-Nitrogen Bond Dissociation Energy --- p.52 / Chapter 3.3.2 --- Effect of Excess PhS02NH2 in the Synthesis of Rh(ttp)NHS02Ph --- p.58 / Chapter 3.4 --- Conclusion --- p.58 / Chapter Chapter 4 --- Experimental Section --- p.60 / References --- p.83 / Appendix I X ray data --- p.90 / Appendix I List of Spectra --- p.96