Orgametallic chemistry belongs to the most rapidly developing area of chemistry today. This is due to the fact that research dealing with the structure of compounds and chemical bonding has been greatly intensified in recent years. Additionally, orgametallic compounds have been widely utilized in catalysis, organic synthesis, electronics, etc. This book is based on my lectures concerning basic orgametallic chemistry for fourth and fifth year chemistry students and on my lectures concerning advanced orgametallic chemistry and homogeneous catalysis for Ph.D. graduate students. Many recent developments in the area of orgametallic chemistry as weIl as homogeneous catalysis are presented. Essential research results dealing with a given class of orgametallic compounds are discussed briefly. Results of physicochemical research methods of various orgametallic compounds as weIl as their synthesis, properties, structures, reactivities, and applications are discussed more thoroughly. The selection of tabulated data is arbitrary because, often, it has been impossible to avoid omissions. Nevertheless, these data can be very helpful in understanding properties of orgametaIlic compounds and their reactivities. All physical data are given in SI units; the interatomic distances are given in pm units in figures and tables. I am indebted to Professor S. A. Duraj for translating and editing this book. His remarks, discussions, and suggestions are greatly appreciated. I also express gratitude to Virginia E. Duraj for editing and proofreading.