Institution: | (1) Max-Planck-Institut für Physik und Astrophysik, Institut für Astrophysik, Karl-Schwarzchild-Str. 1, D-8046 Garching bei München, Federal Republic of Germany;(2) Chemical Center, Physical Chemistry 2, University of Lund, P.O.B. 740, S-22007 Lund 7, Sweden;(3) Present address: Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, PL-01-224 Warsaw 42, Poland |