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Main Group Complexes Incorporating 1,3-bis(furyl)-1,1,3,3-tetramethyldisilazide Ligands
journal contribution
posted on 2023-06-08, 07:57 authored by Lloyd T J Evans, Martyn P Coles, Geoff Cloke, Peter B HitchcockThe lithium salt of the bis-furyl substituted disilazide anion, Li{i} [{i} = N(SiMe2R)2 where R = 2-methylfuryl] has been examined as a ligand transfer reagent for the synthesis of group 2 (magnesium) and group 13 (aluminium) compounds. Salt metathesis between Li{i} and AlMe2Cl afforded the expected dimethyl species, Al{i}Me2 (1), which was isolated as a colourless oil. In contrast the corresponding aluminium dichloride, synthesized from Li{i} and AlCl3, gave crystalline products as both the THF adduct Al{i}Cl2(THF) (2a) and the base-free derivative, Al{i}Cl2 (2b). The homoleptic magnesium bis(amide) Mg{i}2 (3) was also synthesized. X-ray crystallographic analysis of 2a reveals a four-coordinate distorted tetrahedral metal, in which neither of the furyl-substituents interact with the metal. In contrast, the aluminium in the base-free dichloride 2b is five-coordinate, containing the first structurally characterized example in which the amide binds with a 1N,O,O-bonding mode, involving coordination of both furyl-substituents at the N-bound metal.
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Publication status
- Published
Journal
Journal of Organometallic ChemistryISSN
0022328XPublisher
ElsevierExternal DOI
Issue
12Volume
692Page range
2548-2553Department affiliated with
- Chemistry Publications
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- No
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- Yes
Legacy Posted Date
2012-02-06Usage metrics
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