15min:
MICROWAVE SPECTRA OF FLUORINATED PROPIONIC ACIDS AND THEIR HYDRATES.

DANIEL A. OBENCHAIN, G. S. GRUBBS II, STEWART E. NOVICK, Department of Chemistry, Wesleyan University, Middletown, CT 06459; STEPHEN A. COOKE, School of Natural and Social Sciences, Purchase College, SUNY, 735 Anderson Hill Road, Purchase, NY 10577; AGAPITO SERRATO III AND WEI LIN, Department of Chemistry and Environmental Science, University of Texas at Brownsville, Brownsville, TX 78520.

The microwave spectra of three fluorinated propionic acids, namely pentafluoropropionic acid, 2,2,3,3-tetrafluoropropionic acid, and 2,3,3,3-tetrafluoropropionic acid have been observed and assigned. The spectra of pentafluoropropionic acid and its monohydrate were reported in this meeting last year. The conformational analysis of 2,2,3,3-tetrafluoropropionic acid and 2,3,3,3-tetrafluoropropionic acid will be compared to that of pentafluoropropionic acid. The structures of the three monohydrates will be discussed in terms of hydrogen bonding.