			15min:

THE PURE ROTATIONAL SPECTRUM OF PIVALOYL CHLORIDE, (CH₃)₃CCOCl, BETWEEN 800 MHz AND 18800 MHz.

GARRY S. GRUBBS II, CHRISTOPHER T. DEWBERRY, KERRY C. ETCHISION, STEPHEN A. COOKE, Department of Chemistry, The University of North Texas, P. O. Box 305070, Denton, Texas, 76203, U.S.A; MICHEL M. SERAFIN, SEAN A. PEEBLES, Department of Chemistry, Eastern Illinois University, 600 Lincoln Avenue, Charleston, Illinois 61920, U.S.A..

A search accelerated correct intensity Fourier transform microwave (SACI-FTMW) spectrometer has been used to rapidly record the rotational spectrum of pivaloyl chloride between 8 and 18 GHz. A low frequency, cavity-based instrument has then been used to obtain high resolution measurements below 4 GHz. Rotational constants, centrifugal distortion constants and chlorine nuclear quadrupole coupling constants have been determined for both the ³⁵Cl and ³⁷Cl isotopologues. The spectrum provides no evidence concerning internal rotation in the molecule.