3 years ago

Conformer-specific microwave spectroscopy of 3-phenylpropionitrile by strong field coherence breaking

Conformer-specific microwave spectroscopy of 3-phenylpropionitrile by strong field coherence breaking
Sean M. Fritz, A.O. Hernandez-Castillo, Brian M. Hays, Chamara Abeysekera, Timothy S. Zwier
Strong field coherence breaking (SFCB) was used with a chirped-pulse Fourier Transform microwave spectrometer to obtain conformer-specific rotational spectra of 3-phenylpropionitrile in the 8–18 GHz region. Transitions belonging to anti and gauche conformers were identified and assigned and accurate experimental rotational constants were determined to provide insight to the molecular structure. Experimental rotational transitions provided relative abundances in the supersonic expansion. A modified line picking scheme was developed in the process to modulate more transitions and improve the overall efficiency of the SFCB multiple selective excitation technique.
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