Reaction of antimony halides and transition-metal carbonyls with transition-metal ion Schiff-base complexes

Abstract

Reaction of SbCl₃, SbBr₃, and SbCl₅ with planar transition metal compounds NN′-ethylenebis(salicylideneiminato)-metal(II), [M(sean)] where M is cobalt(II), nickel(II) or copper(II), leads to the formation of adducts in which the planarity about the transition metal ion is retained.

To clarify the question of local symmetry about the acceptor metal in such adducts substitution products of the form Ni(saen)M′(CO)₄(where M′= Mo, W), Ni(saen)Mn(CO)₃X (X = Cl, Br), and Ni(aben)Mn(CO)₃X have been isolated [Ni(aben)=NN′-ethylenebis(o-aminobenzylideneiminato)nickel(II)]. The i.r. spectra of these compounds over the carbonyl region have been used in assigning structures to these complexes.