During the last two decades, the concept of aromaticity has evolved and broadened to incorporate not only new types of aromaticity, such as - and -aromaticity, spherical aromaticity, and excited state aromaticity, but also new aromatic species such as all-metal aromatic species, heteroderivatives of metallabenzenes, and metallabenzyenes. Although the concept of aromaticity has been known for nearly two centuries, there is no way to measure it experimentally and no theoretical formula to calculate it. Aromaticity and Antiaromaticity: Basics and Applications will examine the geometrical, electronic, magnetic, thermodynamic characteristics and reactivity properties, to provide insight into its exact nature. Opening with a detailed look at the evolution of aromaticity; from benzene to atomic clusters, Aromaticity and Antiaromaticity: Basics and Applications will go on to look at the new global criteria used to evaluate aromaticity, including the Nucleus Independent Chemical Shift (NICS) index and the electronic indices based on electronic properties. Inorganic aromatic compounds developed in this century, which induce new concepts like multifold aromaticity are also discussed, as well as the three-dimensional aromaticity found in fullerenes and nanotubes, and the Möbius aromaticity present in some annulenes. Written by leading experts in the field, this valuable resource will provide students and researchers with a comprehensive review of all important aspects of aromaticity.

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