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Synthesis and structure of an acyclic dialkylstannylene

Lookup NU author(s): Dr Keith Izod, Dr Corinne Wills, Dr Mike Probert, Dr Ross Harrington

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Abstract

The reaction between iPr2PCl and one equivalent of MeMgBr, followed by one equivalent of BH3┬ĚSMe2 gives the phosphine-borane iPr2P(BH3)Me (4). Treatment of 4 with nBuLi, followed by Me3SiCl gives the sterically demanding phosphine-borane {iPr2P(BH3)}(Me3Si)CH2 (5) in good yield. Metalation of 5 with nBuLi yields {iPr2P(BH3)}(Me3Si)CHLi (6), which was crystallised as the TMEDA adduct [{iPr2P(BH3)}(Me3Si)CH]Li(TMEDA) (6a) and characterised by X-ray crystallography. The reaction between two equivalents of in situ-generated 6 and Cp2Sn in toluene gives the dialkylstannylene [{iPr2P(BH3)}(Me3Si)CH]2Sn (7), which was crystallised from methylcyclohexane/THF as the rac diastereomer. X-ray crystallography reveals that stabilisation of the Sn centre in 7 is afforded by two agostic-type B-H..Sn interactions, one from each BH3 group.


Publication metadata

Author(s): Izod K, Wills C, Probert MR, Harrington RW

Publication type: Article

Publication status: Published

Journal: Main Group Metal Chemistry

Year: 2014

Volume: 37

Issue: 5-6

Pages: 113-117

Print publication date: 01/12/2014

Online publication date: 26/09/2014

Acceptance date: 20/08/2014

ISSN (print): 0792-1241

ISSN (electronic): 2191-0219

Publisher: De Gruyter

URL: http://dx.doi.org/10.1515/mgmc-2014-0028

DOI: 10.1515/mgmc-2014-0028


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