PR SEPARATIONS OF HYBRID IR BANDS

The PR separation in band envelopes of hybrid bands in vapour-phase ir spectroscopy may be calculated according to the formula: {A figure is presented} where Sα refers to the PR separation of the pure type-α band and α to the angle between the direction of the oscillating dipole and the minor (α) axis of inertia with respect to the other (β) axis. The parameter ≈x is either a number, a constant ratio or a function of several molecular constants depending on the value of x and ρ{variant}*. © 1969.