Download or read book Alkyls and Aryloxides of the Early Transition metals written by A. W. Duff and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Transition Metal Alkyl and Tetrahydroborate Complexes written by James Allen Jensen and published by . This book was released on 1988 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Studies of Early transition metal Alkyl and Alkylidene Complexes written by Zhi-Hui Peng and published by . This book was released on 1998 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Reactivity and Structural Studies of Early Transition Metal Alkyl and Alkylidene Complexes in PI Loaded Environments PHD written by Paula Marie Briggs and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Asymmetric Main Group Metal and Early Transition Metal Alkyls written by Paul Twiss and published by . This book was released on 1987 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alkyl heteroatom Bond Forming Reactions from the Late Transition Metals written by Tyler Eugene Stevens and published by . This book was released on 2016 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: C(sp3)-N bond formation is a potential high value reaction in transition metal catalysis, however, only a handful of examples of this fundamental coupling reaction step have been reported. Presented in this thesis are new efforts to promote this challenging reaction. Group 9 and 10 metals bound by the pincer ligands Pybox and PCP, respectively, were initially investigated. Evidence suggests the Ir-Et complex ([(dmPybox)Ir(Et)(OAc)][PF6] (12)) undergoes a [Beta]-H deprotonation, similar to an E2 type elimination in organic chemistry, rather than the desired SN2 nucleophilic attack. Use of strong nucleophiles, i.e. sulfur nucleophiles, resulted in the ring opening of the pybox ligand. Ir-Et complexes bound by the MeBPA ligand ([(MeBPA)Ir(OOCR)Et][PF6] (20 and 21)), however, did undergo the desired reaction to form C-N bonds upon reaction with neutral nitrogen nucleophiles. A computational investigation of the mechanism revealed that rather than the direct attack at the Ir-Et (generally observed for high valent Pd and Pt) the complex first undergoes [Beta]-hydrogen elimination to form an Ir ethylene complex. Nucleophilic attack by amine at the olefin then forms the C-N bond. In the final chapter the synthesis and characterization of new a new Rh-Me complex ((DPEphos)RhMe(I)2 (25)), which undergoes C(sp3)-I reductive elimination, is described. A kinetic investigation of the mechanism indicated two competing mechanisms involving SN2 attack by iodide at both cationic and neutral Rh-Me species. The demonstration of bond formation via nucleophilic attack at the Rh-Me allowed for the room temperature functionalization of the methyl ligand with both nitrogen and sulfur nucleophiles.
Download or read book Early Transitional Metal Alkyl Alkylidene and Alkylidyne Chemistry written by Zachary John Tonzetich and published by . This book was released on 2007 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The nitride reacts with trimethylsilyl trifluoromethanesulfonate to afford the imido complex, W(NTMS)(CH2-t- Bu)(OAr)2(OTf), The X-ray crystal structure of W(C-t-Bu)(CH2-t-Bu)(OAr)2, [W(N)(CH2-t- Bu)(OAr)2]2, and W(NTMS)(CH2-t-Bu)(OAr)2(OTf) are reported as are studies concerning the catalytic efficiency of both W(C-t-Bu)(CH2-t-Bu)(OAr)2 and W(C-t-Bu)(CH2-t-Bu)(O-1- adamantyl)2. APPENDIX A. The reaction of Ph3P=CH2 with Mo(NAr)(CH-t-Bu)(O-t-BuF6)2 (Ar = 2,6-i-Pr2C6H3; O-t-BuF6 = OC(CF3)2Me) produces the anionic alkylidyne complex {Ph3PMe}{Mo(NAr)(C-t-Bu)(O-t- BuF6)2}. An X-ray structure determination of the complex reveals a bent Mo-N-C angle for the imido group, as expected when a metal-carbon triple bond is present. The reactivity of the anion towards electrophiles has been examined and shown to occur predominantly at the imido nitrogen.
Download or read book Early Transition Metal Complexes Bearing Aryloxide Ligands Synthesis Characterisation and Ethylene Polymerisation Behaviour written by Damien Homden and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Chemistry of Transition Metal Alkyls and Hydrides written by Jesse M. Jefferis and published by . This book was released on 2000 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry of the Early Transition Metals written by R. L. Richards and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Developments in Transition Metal Alkyl Chemistry written by David Armstrong and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first section of this thesis, the synthesis and reactivity of the first reported palladium(IV) aryldiazenido complex is explored, as well as its relevance toward the potential for catalytic coupling cycles based on the Pd(II)/Pd(IV) redox pair. The synthesis was achieved by two-electron oxidation of the anionic palladium(II) complex KPd(Tp*)Me2 (Tp*- = hydridotris(3,5-dimethylpyrazolyl)borate) by an aryldiazonium cation. The resulting Pd(IV) complex could be cleanly isolated in good yields, is stable for weeks as a solid when kept cold, and decays in solution over a period of days at room temperature. The decomposition was studied in great depth by both NMR and EPR spectroscopy and it was determined that one-electron pathways were involved. From the synthesis of the Pd(IV) aryldiazenido complex, side reactions were observed whereby free Tp*- ligand could be modified via hydride abstraction by an aryldiazonium cation to form the elusive tris(pyrazolyl)borane which could be trapped and isolated as its acetone adduct in a Frustrated Lewis-pair type reaction. The resulting compound can act as a bidentate N-donor ligand with unusual axial steric bulk. Addition of a second equivalent of aryldiazonium cation further abstracts a 3,5-dimethylpyrazolide group to form a cationic intermediate which can again be trapped by acetone to form a C2-chiral cation. In the later chapters of this thesis, extensive work towards the synthesis of 1- and 2- adamantyl anion equivalents was explored, as well as their utility in the synthesis of transition metal adamantyl complexes. The development of new reliable synthetic methods to produce adamantyl magnesium and zinc compounds (including the unknown diadamantylzincs) was achieved, producing clean and shelf stable compounds. The applications of these adamantyl anions toward organometallic chemistry was investigated. It was observed that the diadamantylzinc compounds were particularly potent in transmetallation reactions, cleanly producing several new transition metal and main group adamantyl complexes. While compounds containing mercury, gold, bismuth, tungsten, and platinum have now been synthesized, those of particular interest have the potential for C-H bond activation chemistry and could open access to new compound classes of facially trifunctionalized adamantanes.
Download or read book Chemistry of Low valent Early Transition Metals and Lanthanides written by Ravinder Minhas and published by . This book was released on 1996 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transition Metal Alkyl Chemistry written by Edwin Charles Culbertson and published by . This book was released on 1976 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry of the Early Transition Metals written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermolysis of Transition Metal alkyls written by C. Curtiss Mancuso and published by . This book was released on 1990 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organometallics and Catalysis written by Manfred Bochmann and published by Oxford University Press, USA. This book was released on 2015 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: A succinct review of the essential concepts of organometallic chemistry, enriched throughout with examples that demonstrate how our understanding of organometallic chemistry has led to new applications in research and industry - not least in relation to catalysis.
Download or read book Compounds of Transition Metals written by Michael Dub and published by Springer. This book was released on 2013-12-01 with total page 845 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this Compilation has been to provide a comprehensive, non critical source of information concerning organometallic compounds. The scope is limited to the compounds containing at least one carbon-metal bond. The information includes methods of preparation, properties, chemical reactions and applications. The First Edition comprised the literature from 1937 to 1958. The Second Edition is completely revised and extended through 1964. The literature prior to 1937 was thoroughly covered by E. Krause and A. von Grosse in 11 11 Die Chemie der metall-organischen Verbindungen, Verlag von Gebrueder Borntraeger, Berlin, 1937. Our work consists of three volumes. Volume I contains derivatives of the transition metals of Groups III through VIII of the Periodic Table. Volume II contains derivatives of germanium, tin and lead. Volume Ill contains derivatives of arsenic, antimony and bismuth. The Compilation is based on searches through Chemical Abstracts. The collection of references for 1964 was completed before the Subject Indexes to Volumes 60 and 61 of the Abstracts were available; thus some omissions in the coverage of that year are possible. We have attempted to make the coverage of the literature complete in order that the Compilation may have best utility to the chemist, chemical engineer, patent attorney and editor. In the interest of brevity, certain numerical data are omitted, but references to the original literature are given. Yield data are rounded to two significant figures. Wherever possible, tables have been used. The entries in the Bibliography section include references to Chemical Abstracts.
