Synthesis, Immobilization, and Applications of Solvent Stabilized Transition Metal Cations with Weakly Coordinating Anions


Book Description

Solvent ligated metal complexes of the type [M(CH3CN)6][A2] (M = Cr, Fe, Co, Ni, Cu and Zn) (A = [B(C6F5)4]-) has been synthesised, characterized and applied for Isobutene polymerization. [Cu(CH3CN)6][A2] (A = [B(C6F5)4]-) and [B(C6H3m-(CF3)2)4]) complexes has been synthesized, characterized, immobilized on P4VP polymer support and the catalytic activity for cyclopropanation of olefins has been tested. [Cu(CH3CN)6][B(C6F5)4] complex immobilized on modified MCM-41 surface and found to be active for cyclopropanation of olefins. [Cu(CH3CN)6][B(C6H3m-(CF3)2)4] complex has been grafted on the surface of aminosilane modified SBA-15 and the catalytic activity for aldehyde olefination was measured. All the heterogenized complexes can be reused and found to be active for several runs with relatively high activity.













Synthesis and Characterization of Metal-Metal Multiply Bonded Complexes and Catalytic Applications of Solvent Stabilized Transition Metal Complexes for Polymerization of Olefins


Book Description

A number of dimolybdenum quadruply bonded complexes and dirhodium compounds were synthesized and characterized. Additionally a variety of solvent stabilized transition metal complexes were explored as initiators for the polymerization of olefins. The polymerization of cyclopentadiene and methylcyclopentadiene was employed as standard reaction. The results revealed that the metal-metal bond plays no important role in the activity of the examined bimetallic complexes and that the mononuclear complexes show excellent activity, which is in good correlation to their predicted ligand field stabilization energy as a function of the number of d electrons available. Furthermore, the analyses of the MCM-41-supported dimolybdenum species indicated that the quadruple bond is retained and their activity is held in the heterogenization process.










Inorganic Nanoparticles


Book Description

Among the various nanomaterials, inorganic nanoparticles are extremely important in modern technologies. They can be easily and cheaply synthesized and mass produced, and for this reason, they can also be more readily integrated into applications. Inorganic Nanoparticles: Synthesis, Applications, and Perspectives presents an overview of these special materials and explores the myriad ways in which they are used. It addresses a wide range of topics, including: Application of nanoparticles in magnetic storage media Use of metal and oxide nanoparticles to improve performance of oxide thin films as conducting media in commercial gas and vapor sensors Advances in semiconductors for light-emitting devices and other areas related to the energy sector, such as solar energy and energy storage devices (fuel cells, rechargeable batteries, etc.) The expanding role of nanosized particles in the field of catalysis, art conservation, and biomedicine The book’s contributors address the growing global interest in the application of inorganic nanoparticles in various technological sectors. Discussing advances in materials, device fabrication, and large-scale production—all of which are urgently required to reduce global energy demands—they cover innovations in areas such as solid-state lighting, detailing how it still offers higher efficiency but higher costs, compared to conventional lighting. They also address the impact of nanotechnology in the biomedical field, focusing on topics such as quantum dots for bioimaging, nanoparticle-based cancer therapy, drug delivery, antibacterial agents, and more. Fills the informational gap on the wide range of applications for inorganic nanoparticles in areas including biomedicine, electronics, storage media, conservation of cultural heritage, optics, textiles, and cosmetics Assembling work from an array of experts at the top of their respective fields, this book delivers a useful analysis of the vast scope of existing and potential applications for inorganic nanoparticles. Versatile as either a professional research resource or textbook, this effective tool elucidates fundamentals and current advances associated with design, characterization, and application development of this promising and ever-evolving device.




Transition Metal Reagents and Catalysts


Book Description

Im Laufe der vergangenen 35 Jahre wurden unzahlige Synthesewege entwickelt, bei denen Ubergangsmetallkomplexe entweder als Reagenzien oder als Katalysatoren fungieren. Dieses Buch bietet besonders denjenigen Synthesechemikern interessante und moderne Einblicke, die bisher noch nicht mit den vielfaltigen Moglichkeiten der Organometallchemie mit Ubergangsmetallen vertraut sind. Zu wichtigen ubergangsmetallkatalysierten Reaktionen werden Anwendungsbeispiele diskutiert. (01/00)