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arXiv · 2312.11959

On-Surface Synthesis of Silole and Disilacyclooctaene Derivatives

Kewei Sun·Lauri Kurki·Orlando J. Silveira·Tomohiko Nishiuchi·Takashi Kubo·Ondřej Krejčí·Adam S. Foster·Shigeki Kawai
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Abstract

Sila-cyclic rings are a class of organosilicon cyclic compounds and have abundant application in organic chemistry and materials science. However, it is still challenging to synthesize compounds with sila-cyclic rings in solution chemistry due to their low solubility and high reactivity. Recently, on-surface synthesis was introduced into organosilicon chemistry as 1,4- disilabenzene bridged nanostructures were obtained via coupling between bromo-substituted molecules and silicon atoms on Au(111). Here, we extend this strategy for syntheses of silole derivatives and graphene nanoribbons with eight-membered sila-cyclic rings from 2,2',6,6'- tetrabromobiphenyl and 1,4,5,8-tetrabromonaphthalene on Au(111), respectively. Their structures and electronic properties were investigated by a combination of scanning tunneling microscopy/spectroscopy and density functional theory calculations. This work demonstrates a generality of this synthesis strategy to fabricate various silicon incorporated nanostructures.

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Kewei Sun, Lauri Kurki, Orlando J. Silveira, Tomohiko Nishiuchi, Takashi Kubo, Ondřej Krejčí, Adam S. Foster, Shigeki Kawai. 2023-12-19. On-Surface Synthesis of Silole and Disilacyclooctaene Derivatives. https://doi.org/10.1002/anie.202401027

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