Feb 17, 2012
New methods are being explored for synthesizing samples of the cis,cis and trans,trans isomers of 1,4-difluorobutadiene-1-d1. New methods depend on exchanging bromoethylene with basic D2O to give its 1-d1 isotopic species, a new process that has been confirmed, and finding a way to convert this material into fluoroethylene-1-d1. The analysis of rotational structure observed in high-resolution IR spectra will give rotational constants that will contribute to determining an equilibrium (atoms at rest) structure for the two nonpolar isomers of 1,4-difluorobutadiene. The goal is to determine the influence of fluorine substitution on the CC bond lengths.