Tetrakis(dimethylamino)ethene: An Extremely Electron‐Rich Molecule with Unusual Structure both in the Crystal and in the Gas Phase

Abstract

An unusual and chiral molecular framework characterizes the crystal structure of the air-sensitive title coumpound 1, which solidifies at 273 K. The molecular fragments on either side of the stretched CC bond (138 pm) are twisted by 28° relative to each other (picture bottom right). Even in the gas phase 1 shows an unusual molecular structure, dictated by steric congestion. The four nitrogen electron pairs of the substantially flattened dimethylamino substituents are bent out of the optima1 orientation for π interaction (the torsion angle ω(CC-NC2) is 55o.