Synthesis of Molybdenum and Tungsten Oxo and Imido Alkylidene NHC Complexes and Their Use in Stereoselective Ring-Opening Metathesis Polymerization

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Publisher : Cuvillier Verlag
ISBN 13 : 3736963947
Total Pages : 306 pages
Book Rating : 4.7/5 (369 download)

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Book Synopsis Synthesis of Molybdenum and Tungsten Oxo and Imido Alkylidene NHC Complexes and Their Use in Stereoselective Ring-Opening Metathesis Polymerization by : Mathis Benedikter

Download or read book Synthesis of Molybdenum and Tungsten Oxo and Imido Alkylidene NHC Complexes and Their Use in Stereoselective Ring-Opening Metathesis Polymerization written by Mathis Benedikter and published by Cuvillier Verlag. This book was released on 2021-04-08 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Im Rahmen der Dissertation wurden unterschiedliche Aspekte der Olefinmetathese mit Molybdän- und Wolframbasierten Katalysatoren untersucht. Zunächst wurde die Eignung von Molybdän Imido Alkyliden N-heterocyclischen Carben (NHC) Komplexen als Initiatoren für die ringöffnende Metathese-Polymerisation (ROMP) erforscht. Durch Einsatz von chiralen, enantiomerenreinen Norbornenderivaten als Monomer konnte gezeigt werden, dass mit diesen Komplexen selektiv trans-isotaktische Polymere hergestellt werden können. Die beobachtete Selektivität ist dabei stark abhängig von der Ligandensphäre. Des Weiteren konnte vollständig hydriertes, syndiotaktisches Polydicyclopentadien hergestellt und erstmals mittels Schmelzspinnen zu Fasern versponnen werden. Ein weiterer Schwerpunkt der Dissertation lag auf der Entwicklung neuer Katalysatoren für die Olefinmetathese. So wurde eine neue Syntheseroute zur Herstellung kationischer Wolfram Imido Alkyliden NHC Komplexen entwickelt. Durch Anpassung der Ligandensphäre konnten luftstabile kationische Molybdän und Wolfram Imido Alkyliden NHC Komplexe hergestellt werden, die hohe Produktivitäten in der Olefinmetathese von Substraten mit verschiedenen sauerstoff- und schwefelhaltigen funktionellen Gruppen zeigen. Schließlich konnte der erste Molybdän Oxo Alkyliden NHC Komplex hergestellt und charakterisiert werden.

Novel Strategies for the Synthesis of Tungsten(VI) and Molybdenum(VI) Imido/Oxo Alkylidene NHC Complexes and Their Application in Ring-Opening Metathesis Polymerization

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Publisher : Cuvillier Verlag
ISBN 13 : 3736966113
Total Pages : 186 pages
Book Rating : 4.7/5 (369 download)

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Book Synopsis Novel Strategies for the Synthesis of Tungsten(VI) and Molybdenum(VI) Imido/Oxo Alkylidene NHC Complexes and Their Application in Ring-Opening Metathesis Polymerization by : Janis Musso

Download or read book Novel Strategies for the Synthesis of Tungsten(VI) and Molybdenum(VI) Imido/Oxo Alkylidene NHC Complexes and Their Application in Ring-Opening Metathesis Polymerization written by Janis Musso and published by Cuvillier Verlag. This book was released on 2022-05-12 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, the synthesis of neutral and cationic group(VI) imido/oxo alkylidene N-heterocyclic carbene (NHC) complexes that tolerate protic functional groups and aldehydes was reported. Unprecedented turnover numbers of up to 1.2 million were found for their silica-supported representatives. Some group(VI) alkylidene NHC complexes even display stability towards moisture and air. Coordination of the NHC to tungsten imido bistriflate precursor complexes, however, can lead to undesired side reactions. This work consequently aimed at the development of novel, more efficient routes to neutral and cationic tungsten imido/oxo alkylidene NHC complexes. In addition, some molybdenum imido alkylidene NHC complexes were targeted. Thereby, the scope of synthetically accessible complexes was broadened and, subsequently, their reactivity in ring-opening metathesis polymerization (ROMP) was probed. Those complexes were used as thermally latent initiators for the ROMP of dicyclopentadiene. Precise determination of the onset temperature of polymerization was achieved via monitoring with differential scanning calorimetry. Furthermore, the selectivity of novel complexes was tested for the formation of stereoregular polymers through ROMP of enantiomerically pure norbornene derivatives, which allowed for the synthesis of up to 98% trans-isotactic or cis-syndiotactic polymers depending on the steric demand of the imido and the alkoxide ligand.

Carbene Complexes, Bis(imido) Complexes, and Titanium Alkyne Hydroamination Catalysts

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ISBN 13 :
Total Pages : 498 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Carbene Complexes, Bis(imido) Complexes, and Titanium Alkyne Hydroamination Catalysts by : James Thaddeus Ciszewski

Download or read book Carbene Complexes, Bis(imido) Complexes, and Titanium Alkyne Hydroamination Catalysts written by James Thaddeus Ciszewski and published by . This book was released on 2004 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Heaviest Metals

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Publisher : John Wiley & Sons
ISBN 13 : 1119304083
Total Pages : 544 pages
Book Rating : 4.1/5 (193 download)

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Book Synopsis The Heaviest Metals by : William J. Evans

Download or read book The Heaviest Metals written by William J. Evans and published by John Wiley & Sons. This book was released on 2019-01-08 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative survey of the science and advanced technological uses of the actinide and transactinide metals The Heaviest Metals offers an essential resource that covers the fundamentals of the chemical and physical properties of the heaviest metals as well as the most recent advances in their science and technology. The authors – noted experts in the field – offer an authoritative review of the actinide and transactinide elements, i.e., the elements from actinium to lawrencium as well as rutherfordium through organesson, the current end of the periodic table, element 118. The text explores the history of the metals, their occurrence and issues of production, and covers a broad range of chemical subjects including environmental concerns and remediation approaches. The authors also offer information on the most recent and emerging applications of the metals, such as in superconducting materials, catalysis, and research into medical diagnostics. This important resource: Provides an overview of the science and advanced technological uses of the actinide and transactinide metals Describes the basic chemical and physical properties of the heaviest metals, and discusses the challenges and opportunities for their technological applications Contains accessible information on the fundamental features of the heaviest metals, special requirements for their experimental study, and the critical role of computational characterization of their compounds Highlights the most current and emerging applications in areas such as superconducting materials, catalysis, nuclear forensics, and medicine Presents vital contemporary issues of the heaviest metals Written for graduate students and researchers working with the actinide and transactinide elements, industrial and academic inorganic and nuclear chemists, and engineers, The Heaviest Metals is a comprehensive volume that explores the fundamental chemistry and properties of the heaviest metals, and the challenges and opportunities associated with their present and emerging technological uses.

Synthesis and Reactivity of Tungsten Imido Complexes from a Zwitterionic Tungsten Zero Amido Precursor

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Publisher :
ISBN 13 :
Total Pages : 462 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Synthesis and Reactivity of Tungsten Imido Complexes from a Zwitterionic Tungsten Zero Amido Precursor by : Scott Taylor Massey

Download or read book Synthesis and Reactivity of Tungsten Imido Complexes from a Zwitterionic Tungsten Zero Amido Precursor written by Scott Taylor Massey and published by . This book was released on 1995 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis of Group IV Imido Complexes Supported by -diketiminate Ligands

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ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Synthesis of Group IV Imido Complexes Supported by -diketiminate Ligands by : Jie Fang

Download or read book Synthesis of Group IV Imido Complexes Supported by -diketiminate Ligands written by Jie Fang and published by . This book was released on 2001 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Watts' Dictionary of Chemistry, Revised and Entirely Rewritten

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Publisher :
ISBN 13 :
Total Pages : 784 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Watts' Dictionary of Chemistry, Revised and Entirely Rewritten by : Henry Watts

Download or read book Watts' Dictionary of Chemistry, Revised and Entirely Rewritten written by Henry Watts and published by . This book was released on 1906 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Further Studies of the Synthesis and Reactivity of Molybdenum-imido Compounds

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ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Further Studies of the Synthesis and Reactivity of Molybdenum-imido Compounds by : Joseph Eric Pelati

Download or read book Further Studies of the Synthesis and Reactivity of Molybdenum-imido Compounds written by Joseph Eric Pelati and published by . This book was released on 1988 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Role of Titanium Imido in C--N Bond Formation

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ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis Role of Titanium Imido in C--N Bond Formation by : Bala Subramanian Ramanathan

Download or read book Role of Titanium Imido in C--N Bond Formation written by Bala Subramanian Ramanathan and published by . This book was released on 2007 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Imido Complexes of the Heavier Group 5 Metals Supported by an N,N'-diaryl-[beta]-diketiminato Ligand

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ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (35 download)

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Book Synopsis Imido Complexes of the Heavier Group 5 Metals Supported by an N,N'-diaryl-[beta]-diketiminato Ligand by : Neil Carleton Tomson

Download or read book Imido Complexes of the Heavier Group 5 Metals Supported by an N,N'-diaryl-[beta]-diketiminato Ligand written by Neil Carleton Tomson and published by . This book was released on 2009 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Catalytic and Stoichiometric Reactivity of Zirconocene and Bridging Zirconocene-iridium Imido Complexes

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ISBN 13 :
Total Pages : 432 pages
Book Rating : 4.:/5 (33 download)

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Book Synopsis Catalytic and Stoichiometric Reactivity of Zirconocene and Bridging Zirconocene-iridium Imido Complexes by : Anne Michelle Baranger

Download or read book Catalytic and Stoichiometric Reactivity of Zirconocene and Bridging Zirconocene-iridium Imido Complexes written by Anne Michelle Baranger and published by . This book was released on 1993 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Reactivity of Ruthenium (II) and Osmium (II) Organometallic Imido Complexes

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ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.:/5 (33 download)

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Book Synopsis Synthesis and Reactivity of Ruthenium (II) and Osmium (II) Organometallic Imido Complexes by : Richard Ira Michelman

Download or read book Synthesis and Reactivity of Ruthenium (II) and Osmium (II) Organometallic Imido Complexes written by Richard Ira Michelman and published by . This book was released on 1992 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Selective Carbon-hydrogen Bond Activation of Unfunctionalized Hydrocarbons with Substituted Zirconocence Imido Complexes

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ISBN 13 :
Total Pages : 512 pages
Book Rating : 4.:/5 (35 download)

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Book Synopsis Selective Carbon-hydrogen Bond Activation of Unfunctionalized Hydrocarbons with Substituted Zirconocence Imido Complexes by : Helen McAdams Hoyt

Download or read book Selective Carbon-hydrogen Bond Activation of Unfunctionalized Hydrocarbons with Substituted Zirconocence Imido Complexes written by Helen McAdams Hoyt and published by . This book was released on 2007 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Studies in the Rearrangement of Allylic Imido Ethers

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ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Studies in the Rearrangement of Allylic Imido Ethers by : Robert Greening Lockwood

Download or read book Studies in the Rearrangement of Allylic Imido Ethers written by Robert Greening Lockwood and published by . This book was released on 1953 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Reactivity of Titanium Imido, Oxo and Diazoalkane Complexes

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ISBN 13 :
Total Pages : 418 pages
Book Rating : 4.:/5 (34 download)

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Book Synopsis Synthesis and Reactivity of Titanium Imido, Oxo and Diazoalkane Complexes by : Jennifer Lynn Polse

Download or read book Synthesis and Reactivity of Titanium Imido, Oxo and Diazoalkane Complexes written by Jennifer Lynn Polse and published by . This book was released on 1996 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Journal of the Chemical Society

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ISBN 13 :
Total Pages : 502 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Journal of the Chemical Society by : Chemical Society (Great Britain)

Download or read book Journal of the Chemical Society written by Chemical Society (Great Britain) and published by . This book was released on 1893 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Quarterly Journal of the Chemical Society of London

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ISBN 13 :
Total Pages : 1266 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Quarterly Journal of the Chemical Society of London by : Chemical Society (Great Britain)

Download or read book Quarterly Journal of the Chemical Society of London written by Chemical Society (Great Britain) and published by . This book was released on 1922 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt: