Rotational Spectra of Selected Isotopic Species of Vinyl Cyanide: Molecular Structure and Quadrupole Hyperfine Structure

✍ Scribed by J.M. Colmont; G. Wlodarczak; D. Priem; H.S.P. Müller; E.H. Tien; R.J. Richards; M.C.L. Gerry

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 722 KB
• Volume: 181
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1996.7174

✦ Synopsis

The pure rotational spectra of 13 isotopically substituted forms of vinyl cyanide, H 2 C|CHCN, have been measured in the microwave and millimeter-wave frequency regions. Spectra of all monosubstituted species containing 13 C, 15 N, and D have been observed, as well as those of all 13 C-monosubstituted species of H 2 C|CDCN, of both cis-and transisotopomers of HDC|CHCN and HDC|CDCN, and of D 2 C|CDCN. Various methods have been used to evaluate the molecular geometry. 14 N quadrupole hyperfine structure has been resolved for four isotopomers, using a cavity pulsed Fourier transform microwave spectrometer. The variation of the constants with isotopomer has been used to evaluate the principal values of the quadrupole tensor. The CN bond is confirmed to be essentially cylindrically symmetrical.