Add time:08/28/2019         Source:sciencedirect.com

Microwave spectra of o- and m-Toluidine (cas 108-44-1) were recorded in a pulsed supersonic jet using chirped pulse techniques. The spectra show both torsional and 14N quadrupole splittings at high resolution. From the torsional splittings, barrier heights were determined of 531 cm−1 and 2.0 cm−1 respectively. Using the quadrupole splittings, orbital occupancy numbers of the amino-nitrogen atoms were calculated. An apparent relationship between these values and the barriers to internal rotation of the methyl groups is discussed.

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