Reaction of the Organometallic Planar Tetracoordinate Carbon Compound [(Cp₂Zr)₂(μ-C⋮CCH₃)(μ-(η¹-C:η²-C,C)-CH₃CCCH₃)]⁺[BPh₄]^- with Alkyl Isocyanides

Abstract

The [(Cp 2 Zr) 2 (μ-CH 3 CCCH 3 )(μ-C⋮CCH 3 )] + BPh 4 - complex ( 4 ) reacts readily with alkyl isocyanides RN⋮C by displacement of the bridging 2-butyne ligand to give the cationic [(μ-acetylide)(μ-isonitrile)(Cp 2 Zr) 2 ] complexes 6a − c in high yield (∼80%). The X-ray crystal structure analysis of an example ( 6c ) revealed the μ-(η 1 -C:η 2 -C,N) coordination of the isonitrile ligand.