What's new?

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.

• Jan. 2019: AlF, v = 0 – 5; 26AlF, v = 0 – 2; p-c-SiC3; HSCO+; DSCO+.
• Dec. 2018: HFS data for H2CO were extended to include R-branch transitions with J up to 5 and Ka = 1.
• Nov. 2018: E-HNCHCN; Z-HNCHCN; cyanooxirane; HCCCH2CN; CH3OCH2CHO.
• Oct./Nov. 2018: Several outdated links were corrected.
• Oct. 2018: c-C6H5CCH; H2NNC.
• Sep. 2018: Corrected Ka designation of E levels of methanol; “≤” now reads “≥” and “>” now reads “<”.
• Aug. 2018: 3-methylanti- and -gauchebutyronitrile; CH3NC; NaS; KS; 15NH; CH3D; the CH3CNO entry is available with separated A1/A2 lines.
• July 2018: i-C3H713CN; (CH3)213CHCN; 13CH3(CH3)CHCN; AlSH; NaSH; MgSH; CaSH; KSH.
• June 2018: corrected files with HFS for isotopic CH3CN in v8 = 1.
• May 2018: C2H5NC.
• 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.

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