L. Weber, Transition-Metal Assisted Synthesis of Rings and Cages from Phosphaalkenes and Phosphaalkynes. M.J. Went, Synthesis and Reactions of Polynuclear Cobalt Alkyne Complexes. K.P. Gable, Rhenium and Technetium OXO Complexes in the Study of Organic Oxidation Mechanisms. R Aumann and H Nienaber, (1-Alkynyl) Carbene Complexes (=1Metalla-1-buten 3-ynes)-Tools for Synthesis. P. Mathur, Chalogen-bridged Metal Carbonyl Complexes. Chapter References.Subject Index. Cumulative List of Contributors for Volumes 1-36. Cumulative List of Contributors for Volumes 37-40.