This book provides a concise, practical guide to the use of samarium diiodide. Although the reagent is used extensively by organic chemists there is still a widely-held view that is can be difficult to prepare and use. In addition samarium diiodide can mediate such a wide variety of reactions in organic chemistry that potential users are often overawed by the extensive primary literature. This book aims to address these misgivings and misconceptions. Rather than being a comprehensive review of the chemistry of samarium diiodide, this user-friendly book adopts an ""an all you need to know"" approach to the topic. It includes the best methods for preparing and handling the reagent, how solvents, co-solvents and additives alter reactivity, the basic mechanisms of reactions, common transformations using the reagent, and emerging areas in samarium diiodide chemistry. The international authors are well-known for their work with samarium diiodide and their expertise covers recent developments in new reactivity and selectivity, applications in target synthesis, co-solvent and additive effects, coordination chemistry and mechanism. The book includes the best methods for preparing and handling the reagent, how solvents, co-solvents and additives alter reactivity, the basic mechanisms of reactions, common transformations using the reagent, and emerging areas in samarium diiodide chemistry. The authors have distilled the extensive primary literature to allow the reader to quickly grasp an understanding of the reagent and its utility. The illustrative practical procedures help the reader to prepare and use the reagent in the laboratory while references from the recent literature allow readers to pursue their interest in the popular reagent.