Transannular interaction in 4,7-[2.2]paracyclophane quinone

The molecular and crystal structure of 4,7-[2.2]paracyclophane quinone and its thermal motion have been studied using single-crystal X-ray diffraction data. Topological analysis of the electron density distribution [MP2(FC)/6-31G(d,p) calculation] revealed the absence of intramolecular transannular interactions between two aromatic rings.