The monograph is devoted to the methods of synthesis and reactions of organometallic compounds of germanium, tin and lead, which are of great scientific and practical importance and have been intensively developed in recent years. The extensive material covering with the maximum possible completeness numerous works of foreign and domestic researchers, including the works of the authors of the monograph . is summarized. Along with previously known, new classes of germanium-, tin- and lead-organic compounds are considered - organic hydrides of these metals and compounds containing two or more metal atoms in the molecule. Physical and chemical properties and methods of analysis of these types of organometallic compounds are described, the main areas of their practical use are considered. The book is designed for chemists: employees of research institutions and factory laboratories, as well as teachers and students of universities .