Issue 46, 2018

Base-induced reversible H2 addition to a single Sn(ii) centre

Abstract

A range of amines catalyse the oxidative addition (OA) of H2 to [(Me3Si)2CH]2Sn (1), forming [(Me3Si)2CH]2SnH2 (2). Experimental and computational studies point to ‘frustrated Lewis pair’ mechanisms in which 1 acts as a Lewis acid and involve unusual late transition states; this is supported by the observation of a kinetic isotope effect Image ID:c8sc03110j-t1.gif for Et3N. When DBU is used the energetics of H2 activation are altered, allowing an equilibrium between 1, 2 and adduct [1·DBU] to be established, thus demonstrating reversible oxidative addition/reductive elimination (RE) of H2 at a single main group centre.

Graphical abstract: Base-induced reversible H2 addition to a single Sn(ii) centre

Supplementary files

Article information

Article type
Edge Article
Submitted
13 Jul 2018
Accepted
17 Sep 2018
First published
18 Sep 2018
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2018,9, 8716-8722

Base-induced reversible H2 addition to a single Sn(II) centre

R. C. Turnell-Ritson, J. S. Sapsford, R. T. Cooper, S. S. Lee, T. Földes, P. A. Hunt, I. Pápai and A. E. Ashley, Chem. Sci., 2018, 9, 8716 DOI: 10.1039/C8SC03110J

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