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 singlecrystal 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.