Frequency measurements of some rotational spectra in the v8 = 2 and the v8 = 3 vibrational states for the 12CH313C15N molecule in the frequency range 17–95 GHz

The microwave spectra of the two isotopes ('3CH3'2C15N and 13CH313C1SN) of the methyl cyanide molecule in the 3 u s , U, and v4 vibrational energy levels for the rotational components 1 s J s 5 (for a range of frequencies 17-95 GHz) were experimentally and theoretically examined. Rotational components in each vibration were measured to determine the mutual interactions in each vibration investigated.The method of isotopic substitution was employed for internal tuning of each vibrational level by single and double substitution of 13C in the two sites of the molecule. It was found that relative frequencies within each vibration with respect to another vibration were shifted in a systematic way. The results given in this work were interpreted on the basis of these energy shifts. Large departures between experimentally measured and theoretically predicted frequencies for the quantum sets ( J , K = *l, I = i l ) , KI = 1 in the 3us and U, vibrational states in 13CH3'2C'SN and 13CH3'3C'SN showed anomalous behaviour which was explained as being due to a Fermi resonance between these vibrational modes.

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Frequency measurements of some rotational spectra in the v8 = 2 and the v8 = 3 vibrational states for the 12CH313C15N molecule in the frequency range 17–95 GHz

Cited by 2 publications

References 14 publications

2 Symmetric Top Molecules, Data and References

2 Symmetric Top Molecules, Data and References

Microwave spectra of the¹³CH₃¹³C¹⁵N and¹³CH₃¹²C¹⁵N molecules in the 3v₈, v₇and v₄vibrational energy levels over the frequency range 17-95 GHz

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Frequency measurements of some rotational spectra in the v8 = 2 and the v8 = 3 vibrational states for the 12CH313C15N molecule in the frequency range 17–95 GHz

Cited by 2 publications

References 14 publications

2 Symmetric Top Molecules, Data and References

2 Symmetric Top Molecules, Data and References

Microwave spectra of the13CH313C15N and13CH312C15N molecules in the 3v8, v7and v4vibrational energy levels over the frequency range 17-95 GHz

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Product

Resources

About

Microwave spectra of the¹³CH₃¹³C¹⁵N and¹³CH₃¹²C¹⁵N molecules in the 3v₈, v₇and v₄vibrational energy levels over the frequency range 17-95 GHz