Sustmann, Reiner; Patzke, Barbara; Boese, Roland:

The reaction of dihydridotetrakis(triphenylphosphine)ruthenium(II) with methyl acrylate. Crystal structure of bis(methylacrylate)bis(triphenylphosphine)(aqua)ruthenium(0).

In: Journal of Organometallic Chemistry, Jg. 470 (1994) ; Nr. 1-2, S. 191-197
ISSN: 0022-328X
Zeitschriftenaufsatz / Fach: Chemie
The complex H2Ru(PPh3)4 reacts with Me acrylate to give bis(methylacrylate)bis(triphenylphosphine)ruthenium(0). Temp.-dependent NMR spectra show that the complex exists in two isomeric forms in soln. The major form, I (ca. 74%), has one Me acrylate ligand h2-coordinated and the other h4-coordinated as a 1-oxabutadiene ligand. This complex reacts with water to give the monoaqua adduct, the crystal structure of which is reported. The minor form, II (ca. 18% in equil. mixt.), is proposed to have a tetrahedral structure with two equiv. h2-bonded Me acrylate ligands.