The microwave spectrum and molecular structure of CO2–HCl

Abstract
Radio frequency and microwave molecular beam electric resonance spectra have been obtained for three isotopic species of the hydrogen‐bonded weakly bound complex CO2–HCl. The following spectroscopic constants have been determined: This complex most likely has a linear equilibrium geometry with an O–H bond length of 2.14 Å. A large induced dipole moment is found in this complex. A comparison of structural properties for this and other related weakly bound molecules is made.