How biradicaloid is bis(paraxylylenyl)? A spectroscopical and theoretical study

R. Marquardt, W. Sander, T. Laue, H. Hopf, Liebigs Ann. (1996) 2039. Sander, 1996, Pure Appl. Chem., 68, 353, 10.1351/pac199668020353 M.J. Frisch, G.W. Trucks, H. B. Schlegel, P.M.W. Gill, B.G. Johnson, M.A. Robb, J.R. Cheeseman, T.A. Keith, G.A. Petersson, J.A. Montgomery, K. Raghavachari, M.A. Al-Laham, V.G. Zakrzewski, J.V. Ortiz, J.B. Foresman, J. Cioslowski, B.B. Stefanov, A. Nanayakkara, M. Challacombe, C.Y. Peng, P.Y. Ayala, W. Chen, M.W. Wong, J.L. Andres, E.S. Replogle, R. Gomperts, R.L. Martin, D.J. Fox, J.S. Binkley, D.J. Defrees, J. Baker, J.P. Stewart, M. Head-Gordon, C. Gonzalez, J.A. Pople, Gaussian 94, Gaussian Inc., Pittsburgh, PA, 1995. Guihery, 1996, Chem. Phys. Lett., 248, 199, 10.1016/0009-2614(95)01294-X