Nucleophilic addition of water to coordinated dipyridylethylene in rhenium(V) complexes

Author: Abrahams A.   Gerber T. I. A.   Mayer P.  

Publisher: Taylor & Francis Ltd

ISSN: 0095-8972

Source: Journal of Coordination Chemistry, Vol.58, Iss.15, 2005-10, pp. : 1387-1393

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Abstract

Complexes of general formula [ReOX2{(C5H4N)CH(O)CH2(C5H4N)}] (X=Cl,I) were prepared by reaction of trans -[ReOCl3(PPh3)2] and trans -[ReOI2(OEt)(PPh3)2] with cis -1,2-di-(2-pyridyl)ethylene (DPE) in ethanol and benzene in air. The coordinated DPE ligand undergoes addition of water at the ethylenic carbon atoms, and the (C5H4N)CH(O)CH2(C5H4N) moiety acts as a uninegative terdentate N,O,N-donor ligand. X-ray crystal structures of both complexes have been determined and show distorted octahedral geometry at the rhenium(V) centre.