A versatile bulky bidentate ligand for both main group and transition metals. Derivatives of lithium potassium magnesium chromium manganese and cobalt containing the C(SiMe3)2(SiMe2C5H4N-2)

Al-Juaid, Salih S, Eaborn, Colin, Hitchcock, Peter B, Hill, Michael S and Smith, J David (2000) A versatile bulky bidentate ligand for both main group and transition metals. Derivatives of lithium potassium magnesium chromium manganese and cobalt containing the C(SiMe3)2(SiMe2C5H4N-2). Organometallics, 19. pp. 3224-3231.

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Abstract

The compound HC(SiMe3)2(SiMe2C5H4N-2), 1, reacts with methyllithium in THF to give a good yield of the lithium derivative which has been isolated as a molecular THF adduct 2. This reacts (a) with KOtBu to give 3, which crystallizes in a solvent-free ionic lattice, (b) with MgBr2 to give the Grignard reagent 4, and (c) with CrCl2 to give Cr{C(SiMe3)2(SiMe2C5H4N-2)}2, 5, along with the halide-bridged Grignard reagent analogue 6, which crystallizes in a lattice containing alternate THF-free molecules (6a) and molecules (6b) with coordinated THF. The reactions of 2 with MnCl2 and CoBr2 give the halide-bridged ate complexes 7, and 8, respectively.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: David Smith
Date Deposited: 06 Feb 2012 19:10
Last Modified: 30 Nov 2012 17:02
URI: http://sro.sussex.ac.uk/id/eprint/19476
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