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Hydrocarbon Spectral Database

NIST Standard Reference Database 115

Last Update to Data Content: July 2004 | Version HistoryDisclaimer | DOI: https://dx.doi.org/10.18434/T4PC70

F. J. Lovas, R. D. Suenram,
J. S. Coursey, S. A. Kotochigova, J. Chang, K. Olsen, and R. A. Dragoset
NIST Physical Measurement Laboratory


All of the rotational spectral lines observed and reported in the open literature for 91 hydrocarbon molecules have been tabulated. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty and reference are given for each transition reported. In addition to correcting a number of misprints and errors in the literature cited, the spectral lines for many normal isotopic species have been refit to produce a comprehensive and consistent analysis of all the data extracted from various literature sources. The derived molecular properties, such as rotational and centrifugal distortion constants, hyperfine structure constants, electric dipole moments, and rotational g-factors are listed.


  1. Introduction
  2. General Description of the Tables
  3. Molecular Parameters and Energy
  4. Evaluation of the Spectral Data
  5. List of Symbols
  6. Special Units, Fundamental Constants, and Useful Conversion Factors
  7. Acknowledgments
  8. References to the Text

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See our other Molecular Spectral Databases: Diatomic | Triatomic | Molecular Microwave Spectral


NIST Standard Reference Database 115
Customer Support
Online: July 2002 | Last update: July 2004

These databases were funded [in part] by NIST's Standard Reference Data Program (SRDP) and by NIST's Systems Integration for Manufacturing Applications (SIMA) Program.

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Sensor Science Division

Created September 12, 2009, Updated December 6, 2019