152697-00-2Relevant academic research and scientific papers
Mono- and Bi-nuclear Complexes of Ruthenium(II) with the Ligand 1-(Diphenylphosphino)-2-(2-pyridyl)ethane
Costella, Luigina,Zotto, Alessandro Del,Mezzetti, Antonio,Zangrando, Ennio,Rigo, Pierluigi
, p. 3001 - 3008 (1993)
The ligand 1-(diphenylphosphino)-2-(2-pyridyl)ethane (ppye) forms six-co-ordinate species (X = Cl, Br or I), the solution behaviour of which has been investigated by 31P- and 13C- NMR, UV/VIS spectroscopy, and conductivity measurements.Halide dissociation from the neutral species yields the five-co-ordinate cations (+) which can dimerize to (2+) depending on the size of the halide.The chloro derivative 2 has been characterized crystallographically.Both the five-co-ordinate cations and the dimeric species react with carbon monoxide forming cationic monocarbonyls, while the octahedral species undergo rupture of the Ru-N bond and neutral carbonyl derivatives are formed containing a dangling, P-bound ppye ligand.All these carbonyl derivatives are formed as the kinetically preferred species with a P atom trans to CO, and are converted in solution at room temperature into the thermodynamically preferred isomers in which the P and CO groups are mutually cis.
