New complexity for aromatic ring agostic interactions

Chem Commun (Camb). 2017 Apr 11;53(30):4187-4190. doi: 10.1039/c7cc01167a.

Abstract

Density functional theory (DFT) calculations reveal that for ligand directed aromatic ring C-H bond activation, the agostic donation can share the same antibonding acceptor orbitals as a previously unrecognised π-donation from the aromatic ring of the ligand. The recognition of carbon based orbitals assisting the agostic interaction has significant implication for C-H bond activation chemistry.