Issue 18, 2018
From the journal:

Chemical Communications

A stable free tetragermacyclobutadiene incorporating fused-ring bulky EMind groups†

Katsunori Suzuki, ORCID logo a   Yasuyuki Numata,b   Naoko Fujita,b   Naoki Hayakawa,b   Tomoharu Tanikawa,b   Daisuke Hashizume, ORCID logo c   Kohei Tamao,a   Hiroyuki Fueno,d   Kazuyoshi Tanakade  and  Tsukasa Matsuo ORCID logo *ab  

* Corresponding authors

a Functional Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute (ASI), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

b Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
E-mail: t-matsuo@apch.kindai.ac.jp

c Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

d Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan

e Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Nishihiraki-cho, Tanano, Sakyo-ku, Kyoto 606-8103, Japan

Abstract

The first free cyclobutadiene (CBD) germanium analogue was obtained as room-temperature stable dark red crystals via the reaction of the bulky EMind-substituted 1,2-dichlorodigermene with lithium naphthalenide. The cyclic 4π-electron antiaromaticity is essentially stabilized by the polar Jahn–Teller distortion in the germanium CBD producing a planar rhombic-shaped charge-separated structure.

Graphical abstract: A stable free tetragermacyclobutadiene incorporating fused-ring bulky EMind groups

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Article information

DOI
https://doi.org/10.1039/C7CC09443D
Article type
Communication
Submitted
09 Dec 2017
Accepted
15 Jan 2018
First published
15 Jan 2018

Chem. Commun., 2018,54, 2200-2203

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A stable free tetragermacyclobutadiene incorporating fused-ring bulky EMind groups

K. Suzuki, Y. Numata, N. Fujita, N. Hayakawa, T. Tanikawa, D. Hashizume, K. Tamao, H. Fueno, K. Tanaka and T. Matsuo, Chem. Commun., 2018, 54, 2200 DOI: 10.1039/C7CC09443D

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