Application of the DVR method to the vibration-rotation spectrum of N2O:: derivation of the dipole moment derivatives in Radau coordinates

The rovibrational line intensities of the N2O Molecule in its ground electronic state have been used to determine its dipole moment derivatives using a fitting procedure. The wavefunctions calculation have been made using a Discrete Variable Representation method in Radau coordinates and an available potential energy surface. The resulting dipole moment derivatives are compared to previous ones obtained using normal coordinates approach. (C) 2003 Elsevier Ltd. All rights reserved.