1.1. Inspired by Nature In many enzymes, such as ureases (Figure 1), two or more metal
centers are poised in close proximity to activate both electrophilic and nucleophilic …

The ion-pair concept1-4 was introduced in 1926 by Bjerrum5 to account for the behavior of
ionophores (species, such as alkali halides, that are ionic in the crystalline state and exist as …

Conspectus Polyolefins are produced today catalytically on a vast scale, and the
manufactured polymers find use in everything from artificial limbs and food/medical …

The innovation of polyolefin with unique architecture, composition and topology continues to
inspire polymer chemists. An exciting recent direction in the polyolefin field is the design of …

Transition metal complexes bearing linked cyclopentadienyl amido ligands, regularly
referred to as constrained geometry complexes (CGCs), have found wide interest both in …

Heterogeneous catalysis for olefin polymerization is one of the most relevant industrial
processes in terms of worldwide diffusion, material volume, and economic turnover. At the …

The nature of the counteranion is an essential component of metallocene polymerisation
catalysts. Detailed mechanistic investigations show how the anion is able to determine the …

A series of bis-(aryl)-α-diimine ligands were synthesized bearing a range of electron-
donating and-withdrawing substituents to systematically investigate the ligand electronic …

The SN2 reaction (bimolecular nucleophilic substitution) is a well-known chemical
transformation that can be used to join two smaller molecules together into a larger molecule …

A mechanistic study of intramolecular hydroamination/cyclization catalyzed by tetravalent
organoactinide and organozirconium complexes is presented. A series of selectively …