The 33S Nuclear Quadrupole Hyperfine Coupling in the Rotational Spectrum of Dimethyl Sulfide and Dimethyl Sulfide-d6

✍ Scribed by U. Kretschmer; H. Hartwig; H. Dreizler

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 469 KB
• Volume: 174
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1276

✦ Synopsis

We investigated the rotational spectrum in the vibrational ground state of ({ }^{33} \mathrm{~S})-dimethyl sulfide and its perdeuterated isotopomer in ({ }^{33} \mathrm{~S}) natural abundance by molecular beam Fourier transform microwave spectroscopy. The ({ }^{33} \mathrm{~S}) nuclear quadrupole coupling was analyzed. In addition, the internal rotation parameters of the two methyl groups were obtained. We derived the rotational constants (A=17598.3002) (14) MHz, (B=7622.2643) (24) MHz, (C=5694.7067) (24) MHz, and the quadrupole coupling constants (\chi_{\mathrm{aa}}=-38.4052(25) \mathrm{MHz}) and (\chi_{\mathrm{bh}}-\chi_{\mathrm{w}}=-57.8733(47)) (\mathrm{MHz}) for (\left(\mathrm{CH}{3}\right){2}{ }^{33} \mathrm{~S}). For (\left(\mathrm{CD}{3}\right){2}{ }^{33} \mathrm{~S}) we found (A=13434.9569(41) \mathrm{MHz}, B=5792.7537(39)) (\mathrm{MHz}, C=4507.9773(39) \mathrm{MHz}, \chi_{\mathrm{aa}}=-38.3580(95) \mathrm{MHz}), and (\chi_{\mathrm{bh}}-\chi_{\mathrm{cc}}=-57.67419(26)) MHz. e 1995 Academic Press. Inc.