158050-83-0Relevant academic research and scientific papers
Osmium(II) Complexes with the Hybrid Ligand 1-(Diphenylphosphino)-2-(2-pyridyl)ethane
Zotto, Alessandro Del,Mezzetti, Antonio,Rigo, Pierluigi
, p. 2257 - 2264 (2007/10/02)
Osmium(II) forms with 1-(diphenylphosphino)-2-(2-pyridyl)ethane (ppye) either mononuclear 1 or binuclear 2 (X = Cl or Br) derivatives, which have been characterized by UV/VIS, IR, and NMR spectroscopy.The six-co-ordinate 1 reacted with CO yielding either neutral or cationic (1+) depending on the nature of the solvent.The latter can also be prepared by reaction between 2 and CO in dichloromethane.All the carbonyl derivatives initially formed have the CO group trans to a P atom and can be thermally converted into the isomer having mutually cis P and CO groups.The binuclear complexes 2 dissiciate in solution to give five-co-ordinate (1+) or the solvento species (1+) depending on the solvent.With MeCN also the disolvento species (2+) is formed, which has been isolated in the solid state as the hexafluorophosphate salt.It undergoes substitution reactions with neutral ligands affording the monoacetonitrile complexes (2+).Complexes 2 also react with the same ligands giving cationic derivatives of the type (1+).
