The temperature dependence of chemical shielding in diatomic molecules: CO, F2, ClF, HBr, and HCl

Abstract
The temperature dependence of chemical shielding in CO, F2, ClF, HBr, and HCl gas has been measured. The functions σ0(T) and σ1(T) in the virial expansion of chemical shielding σ =σ0(T)+σ1(T) ρ+⋅⋅⋅ are reported here for 13C, 19F, and 1H nuclei. The largest shifts with temperature are observed for F2.