Fluxionality and lability in rhenium 4'-hydroxyterpyridine complexes: evidence for an associative mechanism and correlated fluxionality and lability

Dalton Transactions : an International Journal of Inorganic Chemistry
Vanesa Fernández-MoreiraMichael P Coogan

Abstract

The complexes [ReX(CO)(3)(N,N-eta(2)-4'-hydroxy-2-2',6'-2''-terpyridine)] (X = Cl,Br,I) have been synthesised and their ligand exchange reactions and fluxionality of the terpyridine unit studied. The halides are far more labile in these species than in analogous bipyridines, and it is proposed that the ligand fluxionality is involved in this reactivity. Structural studies of the family are reported along with spectroscopic studies including variable temperature NMR which is used to demonstrate a negative entropy of activation for the fluxional process. Synthesis of an analogue which is incapable of fluxional behaviour confirms the link between fluxionality and lability in these complexes.

References

Feb 1, 2007·Chemical Society Reviews·Edwin C Constable
Jul 20, 2007·Chemical Communications : Chem Comm·Angelo J AmorosoCraig Williams
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
May 28, 2009·Angewandte Chemie·Michael P CooganFlora L Thorp-Greenwood
Dec 22, 2009·Chemical Communications : Chem Comm·Vanesa Fernández-MoreiraMichael P Coogan

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Citations

Dec 25, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Tomasz KlemensAnna Chrobok
Oct 8, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Arianna CasulaM Concepción Gimeno
Dec 12, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Dong WangGianluca Accorsi
Mar 12, 2015·Inorganic Chemistry·Stefan ScheererRainer F Winter

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