Vibration Rotation Spectra, the Coriolis Coupling Constants and the Intramolecular Force Field of Symmetric Top Molecules. I. Th 5.4.1: Rotational Transitions Accompany Vibrational Transitions Chemistry LibreTexts Ch 13 Coupling Accurate Vibrational and Ro Vibrational Contributions to the Properties of Large Molecules by a New Engine Employing Curvilinear Internal Coordinates and Vibrational Perturbation Theory to Second Order Journal of Chemical Theory and Rotational Vibrational Transition an overview ScienceDirect Topics