Calculations concerning the HCO+/HOC+ abundance ratio in dense interstellar clouds

Astrophys J. 1984 Apr 1;279(1):322-34. doi: 10.1086/161893.


Calculations have been performed to determine the rate coefficients of several reactions involved in both the formation and depletion of interstellar HCO+ and HOC+. The abundance of HOC+ deduced from these calculations is consistent with the tentative identification of HOC+ in Sgr B2 by Woods et al. The large HCO+/HOC+ abundance ratio observed by Woods et al. is due at least in part to a more rapid formation rate for HCO+ and probably due as well as to a more rapid depletion rate for HOC+.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aldehydes / analysis*
  • Aldehydes / chemistry
  • Astronomical Phenomena
  • Astronomy
  • Extraterrestrial Environment*
  • Formaldehyde / chemistry
  • Hydrocarbons / analysis*
  • Hydrocarbons / chemistry
  • Hydrogen / chemistry*
  • Isomerism
  • Models, Molecular
  • Quantum Theory


  • Aldehydes
  • Hydrocarbons
  • Formaldehyde
  • Hydrogen