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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 Hitchcock
The 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.

History

Publication status

  • Published

Journal

Journal of Organometallic Chemistry

ISSN

0022328X

Publisher

Elsevier

Issue

12

Volume

692

Page range

2548-2553

Department affiliated with

  • Chemistry Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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