Neutron Diffraction Characterization of C–H···Li Interactions in a Lithium Aluminate Polymer

Neutron Diffraction Characterization of C–H···Li Interactions in a Lithium Aluminate Polymer

The 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 nit...

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Veröffentlicht in:Organometallics 2014-08, Vol.33 (15), p.3919-3923
Hauptverfasser: Cole, Jacqueline M, Waddell, Paul G, Wheatley, Andrew E. H, McIntyre, Garry J, Peel, Andrew J, Tate, Christopher W, Linton, David J
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container_end_page 3923
container_issue 15
container_start_page 3919
container_title Organometallics
container_volume 33
creator Cole, Jacqueline M
Waddell, Paul G
Wheatley, Andrew E. H
McIntyre, Garry J
Peel, Andrew J
Tate, Christopher W
Linton, David J
description The 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) n Li (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.
doi_str_mv 10.1021/om500271p
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title Neutron Diffraction Characterization of C–H···Li Interactions in a Lithium Aluminate Polymer
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