The continued and evolving significance of boron chemistry to the wider chemical community is demonstrated by the international and interdisciplinary nature of the research reported in this book. It encompasses inorganic and organic compounds as well as polymers, solid-state materials, medicinal aspects and theoretical studies. Covering many areas of chemistry with boron at its centre, topics include applications to polyoelfin catalysis, medicine, materials and polymers; boron cluster chemistry, including carboranes and metal containing clusters; organic and inorganic chemistry of species containing only one or two boron atoms; and theoretical studies of boron-containing compounds. New materials with novel optical and electronic properties are also discussed.