Almost all contemporary organic synthesis involve transition metal complexes as catalysts or particular reagents. The aim of this book is to provide the reader with detailed accounts of elementary processes within molecular catalysis to allow its development and as an aid in designing novel catalytic systems. The book comprises authoritative reviews on elementary processes from experts working at the forefront of organometallic chemistry. This is the first book that focuses on elementary processes in transition metal complexes for understanding catalytic mechanisms Provides detailed description of elementary processes involved in catalytic cycles by experts in the field Provides an overview of the mechanisms of various homogeneous catalyses.