Quantum chemical calculations were performed using Density Functional Theory (DFT), as implemented in Gaussian16. Geometry optimizations and frequency calculations were carried out at the wB97X-D/def2-TZVP level of theory. Oriented External Electric Field (OEEF) effects were included through the "Field" keyword available in Gaussian16. Field strengths ranging from -2.05 to +2.05 V Å -1 (-0.040 au, to +0.040 au: 1 au = 51.4 V Å -1 ) were applied along the Z-direction, which was aligned with the intrinsic dipole moment in the case of H2S, and with the bond axis in the case of N2 (as there is no intrinsic dipole moment in the latter molecule).