Model structural types for rationalising stoichiometries and coordination numbers in lithium amidomagnesiates : syntheses and X-ray diffraction studies of [{Mg(NR2)2}2], [Li2Mg(NR2)4] and [LiMg(NR2)3·py](R = benzyl, py = pyridine)

Clegg, W. and Henderson, Kenneth W. and Mulvey, Robert and O'Neil, P.A. (1994) Model structural types for rationalising stoichiometries and coordination numbers in lithium amidomagnesiates : syntheses and X-ray diffraction studies of [{Mg(NR2)2}2], [Li2Mg(NR2)4] and [LiMg(NR2)3·py](R = benzyl, py = pyridine). Journal of the Chemical Society, Chemical Communications, 1994 (6). pp. 769-770. ISSN 0022-4936

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Abstract

Factors governing the intermetallic ratios and coordination geometries in lithium amidomagnesiates are discussed with reference to three model crystal structures containing the same (dibenzylamido) ligand, which remarkably reveal that an unsolvated lithium can induce coordination expansion about a magnesium centre.