With the advent of modern instruments and theories, a considerable amount of spectroscopic information has been collected on molecules during this last decade. The infrared, in particular, has seen extraordinary activity. Using Fourier transform interferometers and infrared lasers, accurate data have been measured, often with extreme sensitivity. These data have also been analyzed and accurate molecular parameters determined. Volume II/20 "Molecular Contants mostly from Infrared Spectroscopy" is a recent Landolt-Bornstein publication series. It is made up of several subvolumes (A, B, C, D)...

Volume II/20 provides critically evaluated data on free molecules, obtained from infrared spectroscopy and related experimental and theoretical investigations.
The volume is divided into four subvolumes, "A: Diatomic " "Molecules," "B: Linear Triatomic Molecules," "C: Nonlinear " "Triatomic Molecules," "D: Polyatomic Molecules."
Subvolume B2 contains data for CO2 (OCO) and has been split into two parts. Subvolume II/20 B2 has dealt exclusively with the normal isotopic species of carbon dioxide 12C16O16O. The present part ss deals with thirteen isotopic varieties of CO2. Subvolume B3...