Quantitative gas-phase electrophilicities of the dihalogen molecules XY = F2, Cl2, Br2, BrCl and ClF
Abstract
Intermolecular stretching force constants kσ determined from the rotational spectra of complexes B···XY, where B is one of the Lewis bases CO, C2H2, C2H4, HCN, H2S and NH3 and XY is a dihalogen F2, Cl2, Br2, BrCl and ClF, are used to establish a quantitative scale of gas-phase electrophilicities EXY of the halogens.