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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Synthetic and structural studies of groups 4-6 transition metal amides and amidinates.

January 2007 (has links)
Lam, Pui Chi. / Thesis submitted in: November 2006. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references. / Abstracts in English and Chinese. / Table of Contents --- p.i / Acknowledgements --- p.v / Abstract --- p.vi / 摘要 --- p.viii / List of Compounds --- p.x / Abbreviations --- p.xiii / Chapter CHAPTER 1. --- A GENERAL INTRODUCTION TO METAL AMIDES / Chapter 1.1 --- GENERAL BACKGROUND --- p.1 / Chapter 1.2 --- OBJECTIVES OF THIS WORK --- p.7 / Chapter 1.3 --- REFERENCES FOR CHAPTER1 --- p.8 / Chapter CHAPTER 2. --- SYNTHESIS AND STRUCTURES OF GROUP 4 METAL AMIDES / Chapter 2.1 --- INTRODUCTION --- p.15 / Chapter 2.1.1 --- General Background --- p.15 / Chapter 2.1.2 --- Common Preparation Methods for Group 4 Metal Amides --- p.15 / Chapter 2.1.3 --- "An Overview on Titanium(IV), Zirconium(IV) and Hafnium(IV) Amides" --- p.17 / Chapter 2.2 --- AIMS OF OUR STUDIES --- p.26 / Chapter 2.3 --- RESULTS AND DISCUSSION --- p.27 / Chapter 2.3.1 --- Synthesis of the Ligand Precursor (HL1) and the Corresponding Lithium Derivative [Li(L1tmeda)] --- p.27 / Chapter 2.3.2 --- Synthesis and Structures of Monomeric and Dimeric Titanium(IV) Amides --- p.28 / Chapter 2.3.2.1 --- Synthesis of [Ti(L1 )Cl2(μ-Cl)2] (V and [TiL1)Ch3(THF)] (4) --- p.28 / Chapter 2.3.2.2 --- Reactivity Studies --- p.31 / Chapter 2.3.2.3 --- Physical Characterization of Compounds 3 and 4 --- p.33 / Chapter 2.3.2.4 --- Molecular Structures of Compounds 3 and 4 --- p.36 / Chapter 2.3.3 --- Synthesis and Structures of Mononuclear Zirconium(IV) and Hafnium(IV) Amides --- p.44 / Chapter 2.3.3.1 --- Synthesis of[M(L1)3Cl] (M = Zr 5 and Hf6) --- p.44 / Chapter 2.3.3.2 --- Reactivity Studies --- p.45 / Chapter 2.3.3.3 --- Synthesis of[MCL1)3H] (M = Zr7 and Hf8) --- p.48 / Chapter 2.3.3.4 --- Reactivity Studies of Compound7 --- p.49 / Chapter 2.3.3.5 --- Physical Characterization of Compound 8 --- p.51 / Chapter 2.3.3.6 --- Molecular Structures of Compound 8 --- p.53 / Chapter 2.3.3.7 --- Synthesis of [Zr(L1)3Me] (9) --- p.57 / Chapter 2.3.3.8 --- Reactivity Studies of Compound 9 --- p.58 / Chapter 2.3.3.9 --- Physical Characterization of Compound 9 --- p.59 / Chapter 2.3.3.10 --- Molecular Structure of Compound 9 --- p.60 / Chapter 2.4 --- EXPERIMENTALS FOR CHAPTER 2 --- p.64 / Chapter 2.4.1 --- General Procedures --- p.64 / Chapter 2.4.2 --- Synthesis of Compounds --- p.65 / REFERENCES FOR CHAPTER 2 --- p.68 / Chapter CHAPTER 3. --- SYNTHESIS AND STRUCTURES OF VANADIUM(III) AMIDO AND BENZAMIDINATO COMPLEXES / Chapter 3.1 --- INTRODUCTION --- p.74 / Chapter 3.1.1 --- General Background --- p.74 / Chapter 3.1.2 --- A Brief Introduction on Metal Amidinates --- p.75 / Chapter 3.1.3 --- An Overview on Vanadium(III) Amides --- p.77 / Chapter 3.1.4 --- An Overview on Vanadium(III) Amidinates --- p.82 / Chapter 3.2 --- AIMS OF OUR STUDIES --- p.85 / Chapter 3.3 --- RESULTS AND DISCUSSION --- p.86 / Chapter 3.3.1 --- Synthesis and Structures of Dinuclear Vanadium(III) Amides --- p.86 / Chapter 3.3.1.1 --- Synthesis of[V(L1)2(μ~Cl)]2(10) --- p.86 / Chapter 3.3.1.2 --- Reactivity Studies --- p.88 / Chapter 3.3.1.3 --- Synthesis of [V(L1)2(μ-H)]2 (11) --- p.90 / Chapter 3.3.1.4 --- Physical Characterization of Compounds 10 and 11 --- p.90 / Chapter 3.3.1.5 --- Molecular Structures of Compounds 10 and 11 --- p.94 / Chapter 3.3.2 --- Synthesis and Structure of Mononuclear Vanadium(III) Benzamidinate --- p.102 / Chapter 3.3.2.1 --- "Synthesis of [Li(L2)(tmeda)] (13) (L2 = [PhC(NSiMe3) (NC6H3Me2-2, 6)])" --- p.102 / Chapter 3.3.2.2 --- Synthesis of [V(L2)2Cl] (14) and trans´ؤ[V(tmeda)2Cl2] (15) --- p.103 / Chapter 3.3.2.3 --- Reactivity Studies --- p.104 / Chapter 3.3.2.4 --- Physical Characterization of Compound 14 --- p.107 / Chapter 3.3.2.5 --- Molecular Structure of Compound 14 --- p.107 / Chapter 3.4 --- EXPERIMENTALS FOR CHAPTER 3 --- p.111 / Chapter 3.4.1 --- General Procedures --- p.111 / Chapter 3.4.2 --- Synthesis of Compounds --- p.112 / Chapter 3.5 --- REFERENCES FOR CHAPTER 3 --- p.115 / Chapter CHAPTER 4. --- SYNTHESIS AND STRUCTURES OF CHROMIUM AMIDO AND BENZAMIDINATO COMPLEXES / Chapter 4.1 --- INTRODUCTION --- p.122 / Chapter 4.1.1 --- General Background --- p.122 / Chapter 4.1.2 --- An Overview on Chromium(III) Amides --- p.122 / Chapter 4.1.3 --- An Overview on Chromium(II) Amidinates --- p.125 / Chapter 4.2 --- AIMS OF OUR STUDIES --- p.129 / Chapter 4.3 --- RESULTS AND DISCUSSION --- p.130 / Chapter 4.3.1 --- Synthesis and Structures of A Monomeric Chromium(III) Amide and A Chromium(II) Benzamidinate --- p.130 / Chapter 4.3.1.1 --- Synthesis of[Cr(L1)3] (16) --- p.130 / Chapter 4.3.1.2 --- Synthesis of [Cr(L2)2] (17) --- p.132 / Chapter 4.3.1.3 --- Physical Characterization of Compounds 16 and 17 --- p.133 / Chapter 4.3.1.4 --- Molecular Structures of Compounds 16 and 17 --- p.135 / Chapter 4.4 --- EXPERIMENT ALS FOR CHAPTER 4 --- p.141 / Chapter 4.4.1 --- General Procedures --- p.141 / Chapter 4.4.2 --- Synthesis of Compounds --- p.141 / Chapter 4.5 --- REFERENCES FOR CHAPTER 34 --- p.144 / APPENDIX 1 / Physical Measurements and X-Ray Crystallography --- p.147 / APPENDIX 2 / "Mass Spectra, 1'H and 13C{]H} NMR Spectra, and IR Spectra" --- p.148 / APPENDIX 3 --- p.172 / Table A-1. Selected crystallographic data for compounds 3-4 --- p.173 / Table A-2. Selected crystallographic data for compounds 8-9 --- p.174 / Table A-3. Selected crystallographic data for compounds 10-11 --- p.175 / Table A-4. Selected crystallographic data for compounds 14,16-17 --- p.176
32

Metal complexes derived from chelating amido ligands.

January 2004 (has links)
by Cheng Pui Shan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references. / Abstracts in English and Chinese. / Abstract --- p.i / 摘要 --- p.iii / Acknowledgement --- p.iv / Table of Contents --- p.v / List of Compounds --- p.viii / Abbreviations --- p.xi / Chapter Chapter 1. --- A General introduction to Metal amides / Chapter 1.1 --- introduction / Chapter 1.1.1 --- General Background --- p.1 / Chapter 1.1.2 --- Metal Complexes with 2-Pyridyl Amido Ligands --- p.2 / Chapter 1.2 --- OBJECTIVES OF THIS WORK --- p.4 / Chapter 1.3 --- references for chapter1 --- p.5 / Chapter Chapter 2. --- Group 13 metal Amides / Chapter 2.1 --- GENERAL BACKGROUND --- p.8 / Chapter 2.1.1 --- Common Methods for the Preparation of Group 13 Metal Amides --- p.8 / Chapter 2.1.2 --- "An Overview on Aluminum(III), Gallium(III) and Indium(III) Amides" --- p.9 / Chapter 2.1.3 --- An Overview on Aluminum(III) Aryloxides --- p.15 / Chapter 2.2 --- aims of our studies --- p.18 / Chapter 2.3 --- results and discussion --- p.19 / Chapter 2.3.1 --- Preparation of [HN(SiButMe2)(2-C5H3N-6-Me)] (HL1) and Its Lithium Derivative [LiL1(TMEDA)] --- p.19 / Chapter 2.3.2 --- "Synthesis and Structures of Aluminum(III), Gallium(III) and Indium(III) Amides" / Chapter 2.3.2.1 --- "Synthesis of [MCl(L1)2] (M = Al 3, Ga 4) and [In(L1)3] (5)" --- p.20 / Chapter 2.3.2.2 --- Physical Characterization of Compounds 3-5 --- p.21 / Chapter 2.3.2.3 --- Molecular Structures of Compounds 3-5 --- p.24 / Chapter 2.3.3 --- Reactivity Studies --- p.35 / Chapter 2.3.3.1 --- Physical Characterization of Compounds 6 and7 --- p.38 / Chapter 2.3.3.2 --- Molecular Structures of Compounds 6 and7 --- p.39 / Chapter 2.4 --- EXPERIMENTALS FOR CHAPTER2 --- p.47 / Chapter 2.5 --- REFERENCES FOR CHAPTER2 --- p.52 / Chapter Chapter 3. --- A Silyl´ؤlinked diamine compound and its metal complexes / Chapter 3.1 --- A GENERAL INTRODUCTION TO DIAMINE COMPOUNDS --- p.59 / Chapter 3.2 --- A GENERAL INTRODUCTION TO MIXED ALKALI METAL AMIDES --- p.65 / Chapter 3.3 --- AIMS OF OUR STUDIES --- p.67 / Chapter 3.4 --- SYNTHESIS AND STRUCTURES OF [Me2Si{NH(2-Py)}2] AND THE CORRESPONDING ALKALI METAL AMIDES / Chapter 3.4.1 --- Synthesis and Structure of [Me2Si{NH(2-Py)}2] (HL2) (8) --- p.68 / Chapter 3.4.2 --- Synthesis and Structures of Alkali Metal Amides / Chapter i. --- Synthesis of Sodium Derivatives of8 --- p.74 / Chapter ii. --- Synthesis of a Mixed Alkali Metal Derivative of8 --- p.75 / Chapter iii. --- Attempted Metallation of 8 with KBun --- p.75 / Chapter iv. --- Physical Characterization --- p.77 / Chapter v. --- Molecular Structures --- p.80 / Chapter 3.5 --- synthesis and structure of the iron(ii) derivative [Fe(L2)Cl]2 / Chapter 3.5.1 --- An Overview on Iron(II) Amides --- p.95 / Chapter 3.5.2 --- Aims of Our Studies --- p.97 / Chapter 3.5.3 --- Synthesis and Structure of [FeCl(L2)]2 (14) / Chapter i. --- Synthesis and Characterization --- p.98 / Chapter ii. --- Molecular Structure --- p.99 / Chapter 3.6 --- EXPERIMENTALS FOR CHAPTER 3 --- p.102 / Chapter 3.7 --- REFERENCES FOR CHAPTER 3 --- p.106 / APPENDIX 1 / General Procedures and Physical Measurements --- p.110 / X-Ray Crystallography --- p.110 / APPENDIX 2 / Table A-1. Selected crystallographic data for compounds 3-5. --- p.113 / Table A-2. Selected crystallographic data for compounds 6´ؤ7. --- p.114 / Table A-3. Selected crystallographic data for compounds 8,10-11. --- p.115 / Table A-4. Selected crystallographic data for compounds 12-14. --- p.116
33

Synthesis, structure, and reactivity of group 4 metal-carboryne complexes. / CUHK electronic theses & dissertations collection

January 2010 (has links)
A series of group 4 metal-carboryne complexes were synthesized by the reaction of Li2C2B10H10 with dichloro group 4 metal complexes. Reaction of (eta2-C 2B10H10)ZrCl2(THF)3 with 2 equiv of [MeC(NCy)2]Li or [nPr 2NC(NPri)2]Li also effectively yielded the corresponding group-4-metal-carboryne complexes. On the other hand, treatment of C2B10H10)ZrCl2(THF) 3 with 2 equiv of tBuOK or [ tBuCOCHCOtBu]Na gave unexpected product [(eta2-C2B10H10) 2Zr(OtBu)(THF)] [Zr(OBu t)3(THF)3] or [sigma:sigma:sigma-{ tBuC(O)=CHC(tBu)(O)C 2B10H10}]Zr(eta2- tBuCOCHCOBut)(THF)2 . / Finally, the reactivities of aforementioned zirconacyclopentene and zirconacyclopentane complexes were studied. A new class of benzocarboranes and dihydrobenzocarboranes were prepared by indirect [2+2+2] cycloaddition of carboryne with two different alkynes, or with one alkene and one alkyne, mediated by Ni(II) or Fe(III). In the presence of CuCl and HMPA, zirconacyclopentenes or zirconacyclopentanes reacted with ortho-dihalobenzene reagents to generate naphthalocarborane or dihydronaphthalocarborane derivatives. A series of carborane fused cyclobutenes and cyclobutane were also prepared from zirconacyclopentenes or zirconacyclopentanes complexes mediated by Cu(II). / Next, the reactivities of Cp2Zr(mu-Cl)(mu-C2B 10H10)Li(OEt2)2 toward alkynes, alkenes and pyridines were studied. Various kinds of internal alkynes, and terminal alkenes reacted with this Zr-carboryne precursor to effectively generate the mono- insertion products zirconacyclopentene and zirconacyclopentane, respectively. Interaction of Cp2Zr(mu-Cl)(mu-C2B10H 10)Li(OEt2)2 and pyridines afforded a new kind of carboranyl zirconocene complexes via C-H activation at alpha-position of pyridines. / Subsequently, the reactivities of group 4 metal-carbroyne complexes toward unsaturated molecules were studied. Polar molecules such as azide, ketone, nitrile, carbodiimide, isocyanate, thioisocyanate, carbon disulfide, and isonitrile were inserted into the M-C bond in metal-carboryne complexes to form mono-, di-, or tri-insertion products. These metal-carboryne complexes, however, showed no reactivity toward internal alkynes and alkenes. Terminal alkynes protonated the carboryne complexes to afford neutral o-carborane. / Ren, Shikuo. / Adviser: Zuowei Xie. / Source: Dissertation Abstracts International, Volume: 72-04, Section: B, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 250-271). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. Ann Arbor, MI : ProQuest Information and Learning Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.
34

Synthesis, structure and catalytic property of transition metal complexes with phosphorus-nitrogen and sulfur-nitrogen ligands

Chen, Xiaoping 01 January 2002 (has links)
No description available.
35

Synthesis and reactivity of divalent transition metal complexes supported by arylamido ligands.

January 2008 (has links)
Wong, Fai George. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references. / Abstracts in English and Chinese. / Abstract --- p.iii / 摘要 --- p.v / Acknowledgment --- p.vii / Table of Contents --- p.ix / Abbreviations --- p.xiii / Selected List of Tables --- p.xv / List of Compounds --- p.xvi / Chapter Chapter 1 --- Introduction on Metal Amides / Chapter 1.1 --- General Background --- p.1 / Chapter 1.2 --- A General Classification of A/-anionic Ligands --- p.1 / Chapter 1.3 --- Development of Late Transition Metal Amides --- p.3 / Chapter 1.3.1 --- The First Reported Metal Amides from Each Major Block of the eriodic Table --- p.4 / Chapter 1.3.2 --- Metal Amides Supported by the Simple [N(SiMe3)2]- Ligand --- p.4 / Chapter 1.3.3 --- From Simple to Bulkier Silylamido Ligands --- p.6 / Chapter 1.3.4 --- Metal Complexes Supported by Borylamido Ligands --- p.7 / Chapter 1.3.5 --- Metal Complexes Supported by Arylamido Ligands --- p.9 / Chapter 1.3.6 --- Metal Complexes Supported by erfluorinated Arylamido Ligands --- p.10 / Chapter 1.4 --- Objectives of This Work --- p.11 / Chapter 1.5 --- References for Chapter 1 --- p.13 / Chapter Chapter 2 --- Ligand Substitution Reactions of Divalent Late Transition Metal Amides / Chapter 2.1 --- General Background --- p.17 / Chapter 2.2 --- Objectives of This Work --- p.19 / Chapter 2.3 --- Results and Discussion --- p.20 / Chapter 2.3.1 --- Previous Work in Our Group --- p.20 / Chapter 2.3.2 --- Synthesis of Metal Complexes --- p.20 / Chapter 2.3.3 --- Molecular Structure of the Fe(ll) Complex 11 --- p.22 / Chapter 2.3.4 --- Preparation of Mixed Amide-Alkyl Complexes --- p.24 / Chapter 2.3.5 --- Molecular Structures of the Methyl Complexes 12-15 --- p.29 / Chapter 2.3.6 --- Attempts to repare Mixed Amide-Alkoxide Complexes --- p.39 / Chapter 2.3.7 --- Reactivity of the [Co(L2)Me(tmeda)] Complex (17) --- p.39 / Chapter 2.3.8 --- Molecular Structure of the Co(ll) Iodide Complex 18 --- p.43 / Chapter 2.4 --- Summary --- p.45 / Chapter 2.5 --- Experimental Section for Chapter 2 --- p.48 / Chapter 2.6 --- References for Chapter 2 --- p.51 / Chapter Chapter 3 --- Reduction Chemistry of Divalent Late Transition Metal Amides / Chapter 3.1 --- General Background --- p.54 / Chapter 3.2 --- Objectives of This Work --- p.57 / Chapter 3.3 --- Results and Discussion --- p.57 / Chapter 3.3.1 --- Reduction of the Complexes Mn(ll) and Co(ll) Complexes 7 and 9 --- p.57 / Chapter 3.3.2 --- Attempted Synthesis of the Mononuclear Co(l) Complex --- p.59 / Chapter 3.3.3 --- Molecular Structures of the Complexes 19 and 20 --- p.61 / Chapter 3.3.4 --- Reactivity of the Univalent Co(l) Complex [Co(L2)]2 (20) --- p.65 / Chapter 3.4 --- Summary --- p.67 / Chapter 3.5 --- Experimental Section for Chapter 3 --- p.68 / Chapter 3.6 --- References for Chapter 3 --- p.69 / Chapter Chapter 4 --- A reliminary Study on the Coordination Chemistry of erfluorinated Late Transition Metal Amides / Chapter 4.1 --- General Background --- p.71 / Chapter 4.2 --- Objectives of This Work --- p.73 / Chapter 4.3 --- Results and Discussion --- p.73 / Chapter 4.3.1 --- Synthesis of the Ligand recursor[HN(SiMe3)(C6F5)] (21) --- p.73 / Chapter 4.3.2 --- Synthesis of the Lithium Reagent [Li(L3)tmeda]] (22) --- p.74 / Chapter 4.3.3 --- Synthesis of the Fe(ll) and Co(ll) Complexes of the L3 Ligand --- p.75 / Chapter 4.3.4 --- Molecular Structures of the Chloride Complexes 23 and 24 --- p.77 / Chapter 4.4 --- Summary --- p.82 / Chapter 4.5 --- Experimental Section for Chapter 4 --- p.83 / Chapter 4.6 --- References for Chapter 4 --- p.85 / "Appendix 1 General rocedures, hysical Measurements, and X-Ray Structure Analysis" --- p.87 / Appendix 2 Selected Crystallographic Data --- p.89 / Appendix 3 NMR Spectra of Compounds --- p.94
36

The properties of transition metal complexes with pyrromethenes / by James Ferguson.

Ferguson, James, Ph.D. January 1965 (has links)
[Typescript] / Includes bibliographical references. / 1 v. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1966
37

Heteroleptic paddlewheel complexes and molecular assemblies of dimolybdenum and ditungsten a study of electronic and structural control /

Brown, Douglas J. January 2006 (has links)
Thesis (Ph. D.)--Ohio State University, 2006. / Full text release at OhioLINK's ETD Center delayed at author's request
38

Metal Complexes Containing Chelating Amidophosphine Ligands

Yin, Chi-Chun 11 September 2002 (has links)
The design and application of late transition metal complexes as olefin polymerization catalysts have made tremendous progress in recent years. The advantage of using late transition metal complexes is that they can tolerate a variety of functional groups. We have developed a series of P-N and P-N-P ligands. By using excess n-BuLi to deprotonate H[2b], H[2c] and H[4], we obtained Li[2b](THF)2, Li[2c](THF)2 and Li[4](THF)2 successfully. Li[2b](THF)2 was confirmed by X-ray single crystal diffraction. Using Li[2b](THF)2 as starting material, reacted with 1 eqiv. benzyl chloride and 1 eqiv. Ni(COD)2 in ether solution result in the clean formation of [2b]Ni(CH2Ph).
39

The design, synthesis, characterization, and application of phosphorescent metal complexes /

Carlson, William Brenden, January 2003 (has links)
Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (leaves 159-164).
40

The examination of the stability and reactivity of select transition metal [beta]-diketonate complexes during gas-phase ligand exchange reactions /

Hunter, Gerald O., January 2009 (has links)
Thesis (M.S.)--Youngstown State University, 2009. / Includes bibliographical references (leaves 116-118). Also available via the World Wide Web in PDF format.

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