The first homoleptic η1-heteroarene nickel(0) complex is compound 1. Apparently, this tetrahedral phosphabenzene complex represents a stability niche because neither pyridine nor arsabenzene complexes are accessible by analogous methods. It is also surprising that despite the small steric bulk of the C5H5P ligand and the short Ni-P bond, a dissociation equilibrium NiL4⇌NiL3 + L is established.
No takes yet. Share an insight, caveat, or question.
Elschenbroich et al. (1992) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: