The infrared and Raman spectra of the pentafluoroethyl halides

✍ Scribed by O. Risgin; R.C. Taylor

• Publisher: Elsevier Science
• Year: 1959
• Weight: 914 KB
• Volume: 15
• Category: Article
• ISSN: 0371-1951
• DOI: 10.1016/s0371-1951(59)80406-9

✦ Synopsis

Experimental Pentafluoroethyl chloride was made available through the courtesy of Professor J. J. it!thTIN of the Chemical Engineering Department of the University of Michigan, who had obtained it from the Jackson laboratories of the E. I. DuPont de Nemours Co. It had been prepared for P'VT studies and was further purified by trap to trap distillation. Pentafluoroethyl bromide and iodide were synthesized in this laboratory by the procedure of VON GROSSE et al. [4]. Perfluoropropionic acid, kindly supplied by the Minnesota Mining and Manufacturing Co., was neutralized by Ag,O, and the silver salt decarboxylated by reaction with the appropriate halogen. The product was purified by passage over KOH and P,O,, and was further purified before use by several trap to trap fractionations in a vacuum line. A constant vapor pressure was taken as an indication of purity. The observed spectra show no indication of the presense of sizeable quantities of impurities. The infrared spectra were recorded by a Perkin-Elmer Model 21 double beam spectrometer equipped with both Cal?, and NaCl prisms. The Raman spectra [l]