Schiff-base complexes of ruthenium(II)

Abstract

The interaction of dichlorotris(triphenylphosphine)ruthenium(II) with the sodium salts of various Schiff bases leads to complexes of the type trans-RuL(PPh₃)₂ for the quadridentate bifunctional ligands and RuL₂(PPh₃)₂ for the bifunctional ligands.

Interaction of the chloro-carbonyls, {Ru(CO)₂Cl₂}_n or {Ru(CO)₃Cl₂}₃, with the sodium salt of NN′-ethylenebis-(salicylideneimine), (sal₂enH₂), yields the pale yellow complex cis-Ru(sal₂en)(CO)₂.

Interaction of the bicyclo[2.2.1]hepta-2,5-diene (norbornadiene) complex {Ru(nbd)Cl₂}_n with Na₂(sal₂en) yields Ru(sal₂en)(nbd) which has a non-planar ligand structure.

I.r. and ¹H and ³¹P n.m.r. spectra of the various complexes are given and structures for the compounds proposed.