Nickel(0) Complexes of Five‐Membered Titana‐ and Zirconacyclocumulenes as Intermediates in the Cleavage of CC Bonds of Disubstituted Butadiynes

Ni(0) complexed metallacyclocumulenes such as 1 are intermediates in the heterobimetallic C – C cleavage reaction of disubstituted butadiynes. Furthermore, i...