Dilithioplumbole: A Lead-Bearing Aromatic Cyclopentadienyl Analog

Author:

Saito Masaichi1,Sakaguchi Masafumi1,Tajima Tomoyuki1,Ishimura Kazuya2,Nagase Shigeru2,Hada Masahiko3

Affiliation:

1. Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama-city, Saitama, 338-8570 Japan.

2. Department of Theoretical Molecular and Computational Science, Institute for Molecular Science, Myodaiji, Okazaki, Aichi, 444-8585 Japan.

3. Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Minami-osawa, Hachiohji, Tokyo, 192-0397 Japan.

Abstract

Aromatic Lead The bond stabilization, or aromaticity, observed in cyclic carbon molecules, such as benzene, relies on delocalization of electrons around the ring. Although electron distributions in heavier elements can complicate this arrangement, Saito et al. (p. 339 ) show that even lead, one of the heaviest metals, is able to participate in an otherwise carbon-based aromatic network. In an analog of the well-studied cyclopentadienyl anion, one carbon atom was replaced with lead, and the framework stabilized by appending phenyl groups to the other four carbons. Crystallography revealed a planar structure, which together with spectroscopic data and theoretical calculations confirmed the aromatic character of the product.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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