Effect of Intramolecular Coordination on Tantalum‐Alkylidene‐Centered Reactions: Synthesis and Structure of a Tantalum‐Olefin Adduct and a Tantalum‐Zinc‐Alkylidene Complex

Abstract

An asymmetrically bridging aryldiamine ligand is the salient structural feature of the binuclear complex 1, formed from the corresponding alkylidenetantalum complex and neopentylzinc chloride with elimination of neopentane. The structural data indicate that the TaCZn bridge lies midway in character between a three-center two-electron bond and a combination of a TaC σ bond and a coordinative C→Zn bond.