322012-61-3Relevant academic research and scientific papers
Carbon-carbon double bond formation from two o-methyl groups in osmium phosphine complexes
Baratta, Walter,Herdtweck, Eberhardt,Martinuzzi, Paolo,Rigo, Pierluigi
, p. 305 - 308 (2001)
The osmium complex [(NH4)2OsCl6] reacts with PPh2(2,6-Me2C6H3) in a 2-propanol-water mixture at reflux to give quantitatively a cyclometalated osmium(II) complex containing a tridentate trans-stilbene-type ligand, which forms via a dehydrogenative carbon-carbon coupling of two phosphine o-methyl groups. The structure of this complex has been determined by an X-ray investigation. Carbon-carbon double bond formation has also been observed in the reaction of the osmium(II) precursor [OsCl2(PPh3)3] with PPh2(2,6-Me2C6H3) in toluene, leading to a hydrido osmium(II) complex containing the same tridentate stilbene-type ligand.
