We determined the internal rotation parameters of butyronitrile, antiperiplanar and synclinal, in the internal rotation ground state. The 14N quadrupole coupling constants were refined.
We reinvestigated the quadrupole coupling of benzonitrile by an improved technique of microwave Fourier transform (MWFT) spectroscopy and evaluation method. The error of the coupling constants was reduced by one order of magnitude.
The n B quadrupole hyperfine structure in the rotational spectra of three isotopic species of hydroxydifluoroborane, BF2OH, BF2OD, and BF,18OH has been investigated and the quadrupole coupling constants of these species have been determined. Using the variation of the 11B quadrupole coupling constants with isotopic substitution, it has been possible to evaluate the complete quadru pole coupling tensor, including the off-diagonal element yah, for each isotopic species.11 B o ro n Q u a d r u p o le H y p e r fin e S t r u c t u r e in th e R o ta tio n a l S p e c tr u m o f H y d r o x y d iflu o ro b o r a n e
An investigation of the 14N quadrupole hyperfine structure in the rotational spectrum of n-propyl isocyanide is presented. It was possible to resolve the multiplets by using microwave Fourier transform spectroscopy.
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