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

Beate Gabriele Steller, Roland Fischer, Michaela Flock, Michael S. Hill, David J. Liptrot, Claire L McMullin, Nasir A. Rajabi, Kathrin Tiefling, Andrew S. S. Wilson

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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.
Original languageEnglish
Pages (from-to)336-339
JournalChemical Communications
Issue number56
Publication statusE-pub ahead of print - 2019

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