• Organization: National Institute of Standards and Technology
• Updated: 2005-11-01 00:00:00

This database contains the rotational spectral lines observed and reported in the open literature for 121 diatomic molecules through July 2002. The isotopic molecular species, assigned quantum...

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• Organization: National Institute of Standards and Technology
• Updated: 2004-07-01 00:00:00

This database contains the rotational spectral lines observed and reported in the open literature for 91 hydrocarbon molecules through September 1987. The isotopic molecular species, assigned...

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• Organization: National Institute of Standards and Technology
• Updated: 2020-02-18 00:00:00

These data files contain the data for the measured transition frequencies shown in Table I and the traces in Figure 3 of the publication "Frequency-comb spectroscopy on pure quantum states of a...

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• Organization: National Institute of Standards and Technology
• Updated: 2003-07-01 00:00:00

This data base contains the rotational spectral lines observed and reported in the open literature for 55 triatomic molecules through June 1976. The isotopic molecular species, assigned quantum...

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• Organization: National Institute of Standards and Technology
• Updated: 2009-09-01 00:00:00

This database contains critically evaluated transition frequencies for the molecular transitions detected in interstellar and circumstellar clouds reported in the literature through mid-2008. The...

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