Interaction of oximes with dichlorotris(triphenylphosphine)-ruthenium(II)

Abstract

Dichlorotris(triphenylphosphine)ruthenium(II), RuCl₂(PPh₃)₃, has been treated with (a) chelating oximes (α-dioximes, α-carbonyloximes, α-imino-oximes, hydroxy-oximes, and pyridine oximes); and (b) simple oximes such as acetoxime, cyclohexanone oxime, etc., both without and with added base. Thirty new compounds with oximes as neutral ligands or as uninegative anions have been characterised by infrared (i.r.) and ¹H and ³¹P nuclear magnetic resonance (n.m.r) spectra. All the compounds contain bound triphenylphosphine groups.

The interaction of RuCl₂(PPh₃)₃ with hydroxylamine in the presence of NaOH gives a compound RuCl(NH₂O)(NH₂OH)(PPh₃)₂, which is considered to have an η²-hydroxylaminato-group.