This volume presents a detailed account of the rapidly developing area known as "organometallic conjugation," encompassing organometallic chemistry and other important fields of chemistry, such as theoretical and computational chemistry, preparative and physical chemistry and bio-inorganic chemistry. The major feature of the concept centers on the novel orbital interactions between metal and carbon or similar elements, such as N, O, and S. After an introductory chapter on the history of this new field, recent theoretical and computational aspects are described. Further chapters address, among other things, application to suprazeolite microporous materials, organometallic catalysis in polymerization, orbital conjugation in metalloproteins, the role of hydrogen bonding in biochemical reactions and, finally, potential applications in the fields of soft molecular materials and molecular devices.