Bis(arylimido) Complexes of Chromium (VI)

Coles, Martyn P, Dalby, Christopher I, Gibson, Vernon C, Clegg, William and Elsegood, Mark R J (1995) Bis(arylimido) Complexes of Chromium (VI). Polyhedron, 14 (17). 2455 - 2459. ISSN 0277-5387

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Abstract

A synthetic entry into bis(arylimido) chromium(VI) chemistry is described. Cr(NAr)2(NHBut)Cl (1; Ar = 2,6-Pri2C6H3 may be obtained (1) by treatment of Cr(NBut)2Cl2 with two equivalents of 2,6-diisopropylaniline in pentane, or (2) via the reaction of Cr(NBut)2Cl2 with two equivalents of LiNHAr in Et2O. An X-ray structure determination on 1 reveals a pseudo-tetrahedral coordination geometry with Cr---N distances of 1.643(3) and 1.654(4) Å for the imido groups and 1.813(3) Å for the tertbutylamido ligand ; the substituents of the amide are orientated perpendicular to the Cl---Cr---N(amido) plane. Compound 1 is readily converted to Cr(NAr)2Cl2(2) by treatment with excess BCl3 in dichloromethane.

Item Type: Article
Additional Information: PhD work
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: Martyn Coles
Date Deposited: 06 Feb 2012 21:29
Last Modified: 30 Nov 2012 17:10
URI: http://sro.sussex.ac.uk/id/eprint/31430
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