Synthetic studies on antimony and bismith complexes containing the Ni(CO)(η-C 5Me 5) fragment

Abstract

The reaction between either SbCl 3 or BiCl 3 and three equivalents of Na[Ni (CO)(η-C 5Me 5)] affords the trinickel-element complexes [E{Ni(CO)(η-C 5Me 5)} 3] (E = Sb, Bi). With two equivalents of Na[Ni(CO)(η-C 5Me 5)], the dinickel complexes [ECl{Ni(CO)(η-C 5Me 5)} 2] (E = Sb, Bi) are formed in solution, via the intermediacy of the trinickel compounds, although attempts to isolate these species led, in the case of bismuth, to the cluster compounds [Bi 2Ni 2(η-C 5Me 5) 2] and [BiNi 3(η-C 5Me 5) 3]. All compounds were characterized by spectroscopic and analytical methods. Analogous reactions involving GaCl 3 and InCl 3 led only to intractable mixtures from which no pure compounds could be isolated. The reaction between Te(S 2CNEt 2) 2 and two equivalents of Na[Ni(CO)(η-C 5Me 5)] resulted not in a nickel-tellurium complex, but in the complex [Ni(S 2CNEt 2)(η-C 5Me 5)], which was characterized by X-ray crystallography.