SYNTHESIS AND ELECTRONIC STRUCTURE OF HALOMETHANE AND FURAN DERIVATIVES

Abstract

We have studied the electronic structure of two important groups of compounds: chiral halomethanes and ethynylfurans. The chiral halomethanes are important in the context of "chiral photoionization" and possible optical separation using physical methods. Physical methods may be less specific and hence widely applicable for optical separation than presently used chemical methods. "Chiral photoionization" relies on a difference in interactions between two chiral objects: a chiral molecule and a circularly polarized (chiral) photon. A different number of enantiomeric ions may result upon photoionization with CP light of particular orientation. The second group (ethynylfurans) is important because of their role in the preparation of new, conducting polymer materials. The study of ethynylfurans has been performed in order to understand better the intramolecular, orbital interactions between substituents carrying ?-electrons and heteroatomatic moieties (furan). Such interactions are important to unravel the contribution which delocalized electrons may make to the overall electrical conductivity. Our result measured in the gas phase have probed ring-substituent interactions and found them to be significant only for 2-position.