Abstract
The room-temperature rotational spectrum of phenylacetylene ( C 6 H 5 C CH ) , was studied at frequencies up to 340 GHz. Extensive new measurements, covering rotational transitions with quantum number values up to J = 140 and K a = 59 , allowed determination of precise spectroscopic constants for the ground state and for the lowest two excited vibrational states, v 24 = 1 and v 36 = 1 . The two excited states belong to the lowest B 1 and B 2 symmetry normal modes and their rotational transitions are very strongly perturbed by a-axis Coriolis resonance. A successful fit of the resonance is reported, resulting in ζ 24 , 36 a = 0.8403 ( 3 ) and Δ E = E 36 - E 24 = 15.38994 ( 2 ) cm - 1 , in good agreement with results of ab initio computations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
