Issue 2, 2022

Unexpected and frustrating transformations of double-decker silsesquioxanes

Abstract

Herein, we disclose an unexpected Si–O–Si cage reorganization that was observed during the standard hydrolytic condensation procedure of tetrasilanol double-decker silsesquioxane (DDSQ) with respective mono- and di-chlorosilanes. The investigation of this process allowed us to propose the possible mechanism of this transformation. The formation of all structures was confirmed by NMR, FT-IR, and X-ray (for eleven examples) techniques and their thermal stability was verified (TGA). Additionally, we revealed unusual intramolecular homocoupling product formation during the silylative coupling reaction of vinyl-DDSQ derivatives. It deserves to be emphasized that these findings are the first example of a thorough investigation of hydrolytic condensation and the silylative coupling procedures in the chemistry of DDSQs.

Graphical abstract: Unexpected and frustrating transformations of double-decker silsesquioxanes

Supplementary files

Article information

Article type
Research Article
Submitted
27 Oct 2021
Accepted
27 Nov 2021
First published
14 Dec 2021

Inorg. Chem. Front., 2022,9, 379-390

Unexpected and frustrating transformations of double-decker silsesquioxanes

M. Rzonsowska, K. Mituła, J. Duszczak, M. Kasperkowiak, R. Januszewski, A. Grześkiewicz, M. Kubicki, D. Głowacka and B. Dudziec, Inorg. Chem. Front., 2022, 9, 379 DOI: 10.1039/D1QI01363G

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