Accession Number : AD0608245

Title :   NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY. TEMPERATURE DEPENDENCE OF THE SPECTRUM OF FLUOROCYCLOOCTATERAENE.

Descriptive Note : Technical rept. no. 36,

Corporate Author : CALIFORNIA INST OF TECH PASADENA GATES AND CRELLIN LABS OF CHEMISTRY

Personal Author(s) : Gwynn,Donald E. ; Whitesides,George M. ; Roberts,John D.

Report Date : NOV 1964

Pagination or Media Count : 13

Abstract : The fluorine n.m.r. spectrum of fluorocyclooctatetraene has been shown to be temperature dependent between 30C and -65C. This is attributed to changes in the rate of an inversion-bond shift process which is slow on the n.m.r. time scale at low temperatures. The free energy of activation for inversion is approximately 12 kcal/mole at -33C. (Author)

Descriptors :   (*NUCLEAR MAGNETIC RESONANCE, HALOGENATED HYDROCARBONS), (*HALOGENATED HYDROCARBONS, NUCLEAR MAGNETIC RESONANCE), (*FLUORINE COMPOUNDS, NUCLEAR MAGNETIC RESONANCE), CYCLOOCTATETRAENE, SPECTROSCOPY, CHEMICAL BONDS, MOLECULAR ISOMERISM, ATOMIC ORBITALS, NUCLEAR SPINS

Distribution Statement : APPROVED FOR PUBLIC RELEASE