Vibrations of nitrous oxide: Matrix isolation Fourier transform infrared spectroscopy of twelve N2O isotopomers

Isotopically labeled nitrous oxide has been produced in solid nitrogen matr ices using mixtures of nitrogen and water containing N-14, N-15, O-16, O-17 , and O-18. All twelve possible N2O isotopomers have been obtained, and the ir fundamental, overtone and combination frequencies were assigned by the j oint use of infrared spectroscopy and quantum chemical calculations (B3LYP/ AUG-cc-pVTZ). Specific influence of the nitrogen matrix upon frequency and anharmonicity of the vibrations has been discussed. (C) 2001 American Insti tute of Physics.