Title

Rotational Spectra, Nuclear Quadrupole Coupling Tensors, and Structures for CF3CF2X, X=Cl, Br

Abstract

A chirped pulse Fourier transform microwave spectrometer was used to obtain pure rotational spectra for CF 3CF 2Cl between 8 GHz and 16 GHz, and for CF 3CF 2Br between 8 GHz and 14 GHz. in both cases rotational constants, quartic centrifugal distortion constants and chlorine/bromine nuclear electric quadrupole coupling tensors were obtained for the first time. For both compounds only the trans conformer was observed. Quantum chemical calculations have provided structures with rotational constants closely matching the experimental values. For CF 3CF 2Br the spectra collected were sufficiently strong that the C-13 isotopologues could be observed in natural abundance. Δ J = 2 transitions were observed in the rotational spectrum of CF 3CF 2Br, but were not observed in the spectrum for CF 3CF 2Cl.

Department(s)

Chemistry

International Standard Serial Number (ISSN)

222860

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Elsevier, All rights reserved.


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