Issue 3, 2020

Reductive dehydrocoupling of diphenyltin dihydride with LiAlH4: selective synthesis and structures of the first bicyclo[2.2.1]heptastannane-1,4-diide and bicyclo[2.2.2]octastannane-1,4-diide

Abstract

The reaction of diphenyltin dihydride with LiAlH4 gives access to a set of charged tin cages as their lithium salts. Variation in the ratio of reactants provides a perstannabicyclooctane dianion and a perstannanorbornane as the di- and monoanions. These compounds can be synthesised selectively by careful stoichiometric control and have been characterised by single crystal X-ray diffractometry, NMR and UV-vis spectroscopy. Computational exploration of the electronic structures of these compounds was undertaken and, in agreement with structural and spectroscopic features, indicated significant σ-delocalisation in the tin skeletons.

Graphical abstract: Reductive dehydrocoupling of diphenyltin dihydride with LiAlH4: selective synthesis and structures of the first bicyclo[2.2.1]heptastannane-1,4-diide and bicyclo[2.2.2]octastannane-1,4-diide

Supplementary files

Article information

Article type
Communication
Submitted
11 okt 2019
Accepted
28 nov 2019
First published
29 nov 2019
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2020,56, 336-339

Reductive dehydrocoupling of diphenyltin dihydride with LiAlH4: selective synthesis and structures of the first bicyclo[2.2.1]heptastannane-1,4-diide and bicyclo[2.2.2]octastannane-1,4-diide

B. G. Steller, R. C. Fischer, M. Flock, M. S. Hill, D. J. Liptrot, C. L. McMullin, N. A. Rajabi, K. Tiefling and A. S. S. Wilson, Chem. Commun., 2020, 56, 336 DOI: 10.1039/C9CC07976A

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