Molecular Beauty I

Roald Hoffmann, American Scientist, 76, 389 (1988); also (in Japanese) in Kagaku To Kogyo, 42, 102 (1989). In modified form, in M. D. Joesten, D. O. Johnston, J. T. Netterville, and J. L. Wood, The World of Chemistry, Saunders, Philadelphia, 1991, p. 142.