Abstract The low resolution microwave spectrum of N-nitro, N-methylaniline shows only one series of μ a R-branch bands. The value of B+ C= 1584.6 MHz is consistent with this being the rotamer in which the benzene ring is exo to the nitroso group. The high resolution microwave spectra of the normal. CD 3 and two meta-D species show conclusively that this rotamer has a non-polar heavy atom skeleton. The rotational constants, the quantity Δ c (= ...
[Perrin, Charles L.; Ohta, Brian K.; Kuperman, Joshua; Liberman, Jordan; Erdelyi, Mate Journal of the American Chemical Society, 2005 , vol. 127, # 26 p. 9641 - 9647]