Affiliation: | (1) Department of Chemistry, University of Antwerp (U. I. A.), Universiteitsplein 1, B-2610 Wilrijk, Belgium;(2) Department of Chemistry, Texas A & M University, 77843 College Station, TX, USA;(3) Janssen Pharmaceutica, Turnhoutseweg 30, B-2340 Beerse, Belgium;(4) Central Research Institute for Physics of the Hungarian Academy of Sciences, P. O. Box 49, H-1525 Budapest, Hungary |