... Opens overlay Gerrit L'abbé, Opens overlay Martine Deketele, Opens overlay Jean-Paul Dekerk. Department of Chemistry, University of Leuven Celestijnenlaan 200F, B-3030 Heverlee, Belgium. ... SPONTANEOUS RING TRANSFORMATION OF A 5-AZIDO-1,2,3-THIADIAZOLE Gerrit L'abb Martine Deketele and Jean-Paul Dekerk Department of Chemistry, University of Leuven Celestijnenlaan 200F, B-3030 Heverlee, Belgium. ABSTRACT. ...