Objective Intramolecular dynamics in triatomic and tetraatomic molecules have been studied. Classical mechanical behaviour has been compared to quantum mechanical behaviour at energies where classical chaos predominates in order to elucidate the role of chaos in real molecules. Calculations were performed on the following:the floppy triatomic molecules lithium cyanide and potassium cyanide;the van der Waals systems ArHCl and ArCO;intensities and fluorescence lifetimes and vibrational transitions for regular and chaotic states of lithium cyanide;the hydrogen cyanide with 2-dimensional and 3-dimensional realistic potential functions.Classical calculations were performed on acetylene. Fields of science natural scienceschemical sciencesinorganic chemistryalkali metalsnatural scienceschemical sciencesinorganic chemistryinorganic compoundsnatural sciencesphysical sciencesopticsmicroscopyfluorescence lifetime imagingnatural scienceschemical sciencesorganic chemistryaliphatic compounds Programme(s) FP1-STIMULATION 1C - Plan (EEC) to stimulate European scientific and technical cooperation and interchange, 1985-1988 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Birkbeck College, University of London EU contribution No data Address Malet Street, Bloomsbury WC1E 7HX London United Kingdom See on map Total cost No data Participants (1) Sort alphabetically Sort by EU Contribution Expand all Collapse all Foundation for Research and Technology-Hellas Greece EU contribution No data Address 71110 Heraklion-Crete See on map Total cost No data