new

What's new?

And what is not quite so new anymore?

The database is described in

and in

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.

Earlier Catalog Entries

  • May 2024: 3-hydroxypropenal; MgCCH; CaCCH; 25MgCCH; 26MgCCH; Mg13CCH; MgC13CH; cyanothioketene.
  • Apr. 2024: HCCNC; DCCNC; HCCN13C; HC13CNC; H13CCNC; HCC15NC; DNC3; HNCC13C; HNC13CC; HN13CCC; cis-HSNO; trans-HSNO.
  • Feb. 2024: HNSiO; HPCO; HSiCCH; H2C3Si; H2C4Si; HCNH+.
  • Jan. 2024: HNSO; H2NC3N; E-2-butenenitrile; syn-3-butenenitrile; gauche-3-butenenitrile.
  • Dec. 2023: D2CS; C6H, v = 0; C6H, v11 = 1 μΣ; C6H, v11 = 1 Δ; isobutene.
  • Nov. 2023: CD3OD, vt = 0; CD3OD, vt = 1; SO18O; CH3C(NH)CH3; trans-HONO; cis-HONO.
  • Oct. 2023: H2CS, v4 = 1; H2CS, v6 = 1; H2CS, v3 = 1; H2CS, v2 = 1; H2CS, υ4 IR band; H2CS, υ6 IR band; H2CS, υ3 IR band; H2CS, υ2 IR band; allylimine-Ta; H2C2S; CN+, v = 0; CN+, v = 1 − 0.
  • Sep. 2023: C10H; SiCl+, v = 0, 1; CHD2CHO, vt = 0; c-C3H2D+; extended CHD2OH entry in frequency.
  • Aug. 2023: H2C3H+; SiF+, v = 0, 1; SiF+, v = 1 − 0, 2 − 1; SiF+, v = 2 − 0; 29SiF+, v = 0; 30SiF+, v = 0.
  • Jul. 2023: NO+, v = 0, 1; NO+, v = 1 − 0, 2 − 1; NO+, v = 2 − 0; HC3O+.
  • Nov. 2023: The information on the meaning of lower case characters as quantum numbers was misleading and has been rephrased. The term gI was missing in several “useful equations” because it was assumed to be 1 initially.
  • Mar. 2019: The program of the VAMDC-CDMS was updated. The Classic or ascii-CDMS was moved to this server. Links have been corrected and should work, but a detailed check is pending. The coding of special characters has been adjusted.
  • Nov. 2009: added note in the link which explains the aggregate spin number.

Archive "Catalog Search Form"

  • Nov. 2021: A new group was defined: Other hydrocarbons, that are hydrocarbons different from the carbon chain species CnH and CnH2, but including isotopologs.
  • 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.

Archive "Molecules in Space"

  • June 2024: added 1-butyne with documentation.
  • May 2024: added CaC2, H2CNCN, and cyanothioketene with documentations.
  • Apr. 2024: added thioxyhydroxymethylium, thionylimide, and methoxyethanol with documentations; updated HCCNC, HNC3, and HNCS documentations.
  • Mar. 2024: added extragalactic protonated acetylene with documentation; updated H2O documentation.
  • Feb. 2024: added HCNS with documentation. Updated HNCS, HSCN, HNCO, and HCNO documentations.
  • Jan. 2024: updated SiC2 documentation. The 2-butenenitrile species are counted as two because mutual conversion requires breaking of a (double) bond, hence, the E- and Z-species are different isomers, not conformers.
  • Dec. 2023: added isobutene with documentation.
  • Nov. 2023: added FeC with documentation.
  • Sep. 2023: added methylium and ethynylbenzene with documentation; updated C10H, methylamine, and methyl isocyanide.
  • Aug. 2023: added H2C3N, carbonic acid, and glycolamide with documentations.
  • Jul. 2023: added E-CH2(CH)3CN and H2C3H+ with documentations.

Archive "Fitting Spectra"

  • May 2024: added 3-hydroxypropenal data.
  • Dec. 2020: added aminoacetonitrile example.
  • Nov. 2020: added hydroxymethyl data.

Archive "Cologne Spectroscopy Data"

  • Jan. 2024: isobutene files are complete.
  • Sep. 2023: added new H2CS files with H2C2S.
  • Jun. 2023: added CCl+ files.
  • May 2023: added CH3NHCH3 files.
  • Apr. 2023: added c-CD2CH2O files.
  • new.txt
  • Last modified: 2024/06/12 17:10
  • by mueller