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Hydridostannylene Derivatives of Magnesium and Calcium
Dominic B Kennedy1,2, Kyle G Pearce1, Samuel E Neale1
1Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
Abstract:
Reactions of a m-terphenylhydridostannylene with β-diketiminato magnesium and calcium hydrides provide bis-μ2-hydrido species, the heterobimetallic constitutions of which are maintained after the addition of THF donor solvent. In both cases, reactions with hex-1-ene result in the formation of tetravalent organostannyl alkaline earth derivatives. Whereas the magnesium reagent undergoes facile twofold addition, the calcium-centered process is arrested after a single alkene reduction event. This contrasting behavior is assessed to result from the heavier alkaline earth element's ability to form a persistent polyhapto interaction with an arene substituent of the m-terphenyl ligand.
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