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Universität zu Köln
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Mathematisch-Naturwissenschaftliche Fakultät
Fachgruppe Physik

I. Physikalisches Institut

What's new?

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What is not quite so new anymore ? (Less recent changes to the CDMS)

The database is described in
H. S. P. Müller, F. Schlöder, J. Stutzki, and G. Winnewisser,
J. Mol. Struct. 742, 215–227 (2005)
and in
H. S. P. Müller, S. Thorwirth, D. A. Roth, and G. Winnewisser,
Astronomy and Astrophysics 370, L49–L52 (2001).
Please acknowledge use of the CDMS by citing these article. You are very welcome to state the web address also. We recommend to cite the original sources of the data too, which are given in the documentations, at least as far as this is feasible.

Recent Catalog Entries

  • Apr. 2018: g-i-C3H7OH; a-i-C3H7OH; AlC2; trans-HC(S)SH; cis-HC(S)SH.
  • Mar. 2018: H2C4S; H2C5S; DCCCHO; HCCCDO; HCC13CHO; HC13CCHO; H13CCCHO; corrected tags of pentadiynal and heptatriynal; corrected files without HFS for isotopic CH3CN in v8 = 1.
  • Feb. 2018: DS2; pentadiynal; heptatriynal; propynethial; pentadiynethial; NS+; HC4S; HC5S; HC7S; CHD2+.
  • Jan. 2018: HD2+; HDNCN; HCCS; HC3S; H2C4O; s-propanal, v = 0; s-propanal, v24 = 1; s-propanal, v23 = 1; g-propanal, v = 0; C6S; C9S; created hyperfine predictions for benzonitrile; the CH3CN files with HFS have been corrected as well.
  • Dec. 2017: HC15N, v = 0; HC15N, v2 = 1; HC15N, v2 = 2; HC15N, v2 = 3; HC15N, v3 = 1; HC15N, v1 = 1; the standard entry of CH2OH is available with 6 quantum numbers; the standard CH3CN entries (without HFS) have been corrected.
  • Nov. 2017: HNC3.
  • Oct. 2017: SiH+, v = 0; SiH+, v = 1 – 0; urea; SH+; 34SH+.
  • Sep. 2017: H2CSiH2; H2CSi; c-H2C2Si; H2C2Si; 2-Cyano-anti-butane.
  • Aug. 2017: 15N2H+; 15N2D+; HC4O; HC5O; HC6O; HC7O; H2NCH2CN, v11 + v18 = 1; H2NCH2CN, v17 = 1; a new compilation is available for CH3OH, vt = 0 – 2.
  • July 2017: DOCO+; HOCO+; HO13CO+; separate para and ortho predictions with 14N hyperfine splitting are available for NH2D.

General Section

  • Nov. 2009: added note in the link which explains the aggregate spin number.

Catalog Search Form

  • Dec. 2015: new molecule group: cyclic species.

Partition Functions

  • Apr. 2010: started to add values at 2.725 and 5 K for some species. The log values are also displayed in the partition function table.

Molecules in Space

  • May 2018: addened NCO with documentation; updated cyanamide, HOCN, and H2NCO+ documentations.
  • Mar. 2018: added HCS and HSC with documentations; updated H2CO documentation.
  • Feb. 2018: added thionitrosylium with documentation.
  • Jan. 2018: added benzonitrile with documentation; added HC5N documentation; updated HC7N documentation.
  • Dec. 2017: added HC7O, methoxymethanol, and HS2 with documentations; added HCCNC and HNC3 documentations; updated SiS documentation; omitted HC11N from the table.
  • Nov. 2017: added extragalactic SH+ with documentation; updated extragalactic CH+ documentation.
  • Oct. 2017: added CH3Cl; SiH3CN; and CH3SiH3 with documentations; updated c-C3H; CH3CN; formamide; CH3CHO; C6H2; C7H; and CH3C4H documentations.
  • Aug. 2017: updated propyl cyanides and extragalactic C2S and H2CNH documentations.
  • July 2017: added HC5O with documentation; added tentative detection of N-methylformamide with documentation; updated SiS and CH3NCO documentations.

Fitting Spectra

  • June 2017: added NO files with FTIR data.
  • Apr. 2016: added ethanethiol files.
  • Jan. 2016: updated OH+.

Cologne Spectroscopy Data

  • Feb. 2018: Added CHD2+ files.
  • Jan. 2018: Added extended HD2+ files (plus one line, basis of the new entry) as well as alternative fits. Added also propanal files.
  • Sep. 2017: Added 2-Cyano-anti-butane files.
  • Mar. 2017: The new H2D+ and HD2+ files are available.
  • Feb. 2017: added H2C17O; updated H2C18O and H2CO.