Pure rotational spectrum of dibenzofuran in range of 2−6 GHz

Abstract

We report the observation and assignment of the rotational spectra of dibenzofuran measured in the range of 2–6 GHz with a newly constructed broadband chirped-pulse Fourier transform microwave (cp-FTMW) spectrometer. An analysis of the microwave spectra led to the assignment of 40 b-type transitions, resulting in the accurate determination of the rotational constants A=2278.19770(38) MHz, B=601.12248(10) MHz, and C=475.753120(98) MHz.