Harmonic Wavenumbers and Normal Coordinates for Pyramidal Molecules of the Type XYZ2 (Y is N, P, As, Sb; X, Z are H, D, T)

Abstract

Using a harmonic general valence force field previously determined for NX₃, PX₃, AsX₃ and SbX₃ (X is H, D, T), the harmonic wavenumbers and normal coordinates have been calculated for pyramidal molecules of the type XYZ₂ (Y is N, P, As, Sb; X, Z are H, D, T). For the nitrogen molecules, harmonic wavenumbers also were obtained for the nitrogen‐15 isotope and hypothetical molecules in which X and Z take on masses of 6, 20, and 1000 amu. The wavenumbers for the nitrogen molecules, XNH₂, XND₂, and XNT₂ over the range X=1–1000 amu, and HNZ₂, DNZ₂, and TNZ₂ over the range Z=1–1000 amu are plotted.