Far-infrared Fourier transform spectroscopy of (C-12)(0-18)

This paper reports on high-accuracy Fourier transform measurements of the far-infrared spectrum of (C-12)(0--18) between 0.87 and 2.7 THz (32.9-91.2/cm). Precise rotational constants are determined, and transition frequencies up to J = 35-34 are given (with an accuracy better than 5 x 10 to the -7th), along with the previously available transition frequencies for (C-12)(0-16) and (C-13)(0-16).