142496-55-7Relevant articles and documents
Complexes of the Platinum Metals. Part 43. N,N'-Diphenylamidinato Derivatives of Ruthenium, Osmium and Iridium
Clark, Terry,Robinson, Stephen D.
, p. 2827 - 2834 (2007/10/02)
N,N'-Diphenylamidines PhN=C(R)-NHPh (R = H, Me, Et or Ph) reacted with the precursors , and *nMeOH (CO)(PPh3)2>, (CO)(PPh3)2> and (CO)(PPh3)2> respectively.The hydrides (CO)(PPh3)2> have also been obtained by oxidative addition of amidines to and by treatment of the precursors with amidines in the presence of an excess of base (NEt3).The trifluoroacetates *nMeOH reacted with amidines in the presence of NEt3 to afford the hydrides (CO)(PPh3)2> (M = Ru, R = H; M = Os, R = H, Me, Et or Ph) or the bis(amidinato) complexes 2(CO)(PPh3)> (M = Ru; R = Me, Et or Ph).Reactions of the dichlorides with amidines and base (NEt3) in boiling toluene containing traces of alcohol were accompanied by a carbonyl-abstraction reaction leading to formation of (CO)(PPh3)2> and/or (CO)(PPh3)2>.The hydrides (CO)(PPh3)2> are also obtained when or reacts with amidines in boiling toluene (containing a trace of alcohol) or in 2-methoxyethanol.The carbonyl abstractions are remarkable in that they have no parallel in the corresponding reactions involving the related triazenide (PhNNNPh(1-)) and carboxylate (RCO2(1-)) ligands even when neat alcohols are used as solvents.Reactions of mer-, -NEt3 and with amidines in boiling benzene or toluene afforded (PPh3)2>, (PPh3)2> and (PPh3)2> respectively.
