Yildiz, CB;
Leszczyńska, KI;
González-Gallardo, S;
Zimmer, M;
Azizoglu, A;
Biskup, T;
Kay, CWM;
... Scheschkewitz, D; + view all
(2020)
Equilibrium Formation of Stable All‐Silicon Versions of 1,3‐Cyclobutanediyl.
Angewandte Chemie: International Edition
, 59
(35)
pp. 15087-15092.
10.1002/anie.202006283.
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Abstract
Main group analogues of cyclobutane‐1,3‐diyls are fascinating due to their unique reactivity and electronic properties. So far only heteronuclear examples have been isolated. Here we report the isolation and characterization of all‐silicon 1,3‐cyclobutanediyls as stable closed‐shell singlet species from the reversible reactions of cyclotrisilene c ‐Si3Tip4 (Tip=2,4,6‐triisopropylphenyl) with the N‐heterocyclic silylenes c ‐[(CR2CH2)(Nt Bu)2]Si: (R=H or methyl) with saturated backbones. At elevated temperatures, tetrasilacyclobutenes are obtained from these equilibrium mixtures. The corresponding reaction with the unsaturated N‐heterocyclic silylene c ‐(CH)2(Nt Bu)2Si: proceeds directly to the corresponding tetrasilacyclobutene without detection of the assumed 1,3‐cyclobutanediyl intermediate.
| Type: | Article |
|---|---|
| Title: | Equilibrium Formation of Stable All‐Silicon Versions of 1,3‐Cyclobutanediyl |
| Location: | Germany |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/anie.202006283 |
| Publisher version: | https://doi.org/10.1002/anie.202006283 |
| Language: | English |
| Additional information: | Copyright © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
| Keywords: | diradicaloids, low-valent species, silicon, small ring, synthesis |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10102154 |
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