Browsing by Author "Linton, DJ"
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- ItemNeutron diffraction characterization of C–H···Li interactions in a lithium aluminate polymer(ACS Publications, 2014-05-01) Cole, JM; Waddell, PG; Wheatley, AEH; McIntyre, GJ; Peel, AJ; Tate, CW; Linton, DJThe reaction of AlMe3 with tBuLi in the presence of trimethylacetonitrile affords the bimetallic complex [tBu(Me)Al(μ-Me)2Li·NC(tBu)]∞ (1). Pseudotetrahedral Al centers form by the nucelophilic addition of tBuLi to AlMe3.The alkali-metal center is stabilized through coordination of the unreacted nitrile and polymer formation via the construction of Al(μ-Me)nLi (n = 1, 2) motifs. Neutron diffraction evidences agostic interactions in the bridging methyl group to give further stabilization. There is only one previous report of a neutron structure of a lithium aluminate compound. This work therefore offers an important structural example of agostic interactions and the precise nature of Al(μ-Me)2Li bridging.© 2014, American Chemical Society.