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Crystallographic characterisation of binary alkali metal alkoxide magnesium bis(alkyl) mixtures: differential binding of Na+ and K+ to a common dinuclear diorganomagnesiate

Barnett, N.D.R. and Clegg, W. and Kennedy, A.R. and Mulvey, R.E. and Weatherstone, S. (2005) Crystallographic characterisation of binary alkali metal alkoxide magnesium bis(alkyl) mixtures: differential binding of Na+ and K+ to a common dinuclear diorganomagnesiate. Chemical Communications (London), 2005 (3). pp. 375-377. ISSN 0009-241X

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Abstract

Relevant to mixtures studied in solution and utilised in styrene polymerisation but hitherto not characterised in the solid, two crystal structures of alkali metal alkoxide-magnesium bis(alkyl) co-complexes have been determined, revealing that in binding to the C2O tripodal face of a common organomagnesiate anion, Na+ prefers O-coordination, whereas K+ prefers C-coordination.