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.







Transition Metal Sulphides


Book Description

Hydrotreating catalysis with transition metal sulphides is one of the most important areas of industrial heterogeneous catalysis. The present book deals with the chemical and catalytic aspects of transition metal sulphides, focusing on their use in hydrotreating catalysis. The book¿s 12 chapters present reviews of solid-state, coordination and organometallic chemistry, surface science and spectroscopic studies, quantum chemical calculations, catalytic studies with model and real catalysts, as well as refinery processes. A presentation of state-of-the-art background to pertinent work in the field. Can be used as an introduction to the chemical and catalytic properties of transition metal sulphides as well as an advanced level reference.