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![The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
Electronic Structure of All-Metal Neutral M4 (M = Al, Ga, In) Rings: Aromaticity and Spin-Avoided σ-σ Diradical
Amit Das1, Palash J Thakuria1, Ankur K Guha1
1Advanced Computational Chemistry Centre, Department of Chemistry, Cotton University, Guwahati, Assam 781001, India.
Abstract:
Aromaticity is deeply rooted in organic chemistry, underpinning the electronic structure, stability, and reactivity of planar conjugated rings. While all-metal aromaticity in Al42-, Ga2-, and In2- has been reported, neutral M4 (M = B-In) rings have attained limited attention. Herein, we report a unique feature of the neutral bare Al4 ring, which possesses a very rare σ-σ diradical character, whereas the other M4 rings have mixed σ-π diradical character. The present study clearly indicates that like the Al42- ring, neutral Al4 rings are also double (σ + π) aromatic, while Ga4 and In4 rings are σ-aromatic.
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