Synthesis and Molecular Structures of Uranium and Thorium Diamidoamine Complexes

Wilson, D James, Sebastian, Alfredo, Cloke, F Geoffrey N, Avent, Anthony G and Hitchcock, Peter B (2003) Synthesis and Molecular Structures of Uranium and Thorium Diamidoamine Complexes. Inorganica Chimica Acta, 345 (-). pp. 89-94. ISSN 00201693

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Abstract

Treatment of UCl4 or ThCl4 with Li2[Me3SiN{CH2CH2NSiMe 3}2] affords the mono-diamidoamine complexes [M(Me3SiN{CH2CH2NSiMe3} 2)Cl2(THF)] (M=U, Th), and also the bis-diamidoamine complexes [M(Me3SiN{CH2CH2NSiMe3} 2)2] (M=U, Th). The base-free complex [U(Me3SiN{CH2CH2NSiMe3} 2)Cl2]2 was obtained by treatment of [U(Me3SiN{CH2CH2NSiMe3} 2)Cl2(THF)] with hot toluene. The X-ray structures of [Th(Me3SiN{CH2CH2NSiMe3} 2)Cl2(THF)] and [U(Me3SiN{CH2CH2NSiMe3} 2)Cl2]2 reveal a distorted octahedral geometry, whereas [M(Me3SiN{CH2CH2NSiMe3} 2)2] (M=U, Th) display trigonal bipyramidal geometry at the metal centre and the amino group on one of the diamidoamine ligands is non-bonding.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: Geoff Cloke
Date Deposited: 06 Feb 2012 20:16
Last Modified: 27 Mar 2012 09:56
URI: http://sro.sussex.ac.uk/id/eprint/25132
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