Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Reactivity of [Ru-3(CO)(12)] with a phosphine-functionalized Imidazol-2-ylidene and Its imidazolium salt

Cabeza, Javier A. and Damonte, Marina and Garcia-Alvarez, Pablo and Kennedy, Alan and Perez-Carreno, Enrique (2011) Reactivity of [Ru-3(CO)(12)] with a phosphine-functionalized Imidazol-2-ylidene and Its imidazolium salt. Organometallics, 30 (4). pp. 826-833. ISSN 0276-7333

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

The trinuclear cluster [Ru-3(CO)(12)] reacts at room temperature with the phosphine-functionalized N-heterocyclic carbene (NHC) ligand 1[2-(diphenylphophino)ethyl]-3-methylimidazol-2-ylidene (dppeImMe), in 1:1 mol ratio, to give the edge-bridged trinuclear derivative [Ru-3(mu-kappa C-2,P-dppeImMe)(CO)(10)] (1). The use of a 1:3 [Ru-3(CO)(12)] to dppeImMe mol ratio leads to the mononuclear derivative [Ru(kappa C-2,P-dppeImMe)(CO)(3)] (2), which has a trigonal-bipyramidal ligand arrangement with the NHC and phosphine fragments of the dppeImMe ligand in axial and equatorial positions, respectively. Upon gentle heating (refluxing. THF), compound 1 is transformed into the face-capped dihydrido derivative [Ru-3(mu-H)(2)(mu(3)-kappa C-3(2),P-dppeImCH)(CO)(8)] (3), which arises from the oxidative addition of two C-H bonds of the N-methyl group of the dppeImMe ligand. The trinuclear salt [Ru-3(kappa P-dppeHImMe)(3)(CO)(9)][BF4](3) (4[BF4](3)), which contains a P-coordinated 1[2-(diphenylphophino)ethy1]-3-methylimidazolium ligand ([dppeHImMe](+)) on each Ru atom, has been prepared by treating [Ru-3(CO)(12)] with the salt [dppeHImMe][BF4]. The deprotonation of 4[BF4](3) with three equivalents of K[N(SiMe3)(2)] is an alternative way to prepare the mononuclear complex 2.