Infrared matrix spectra, normal coordinate analysis and valence force field of six isotopomers of methyl nitrite

Article abstract of DOI:10.1016/0584-8539(81)80149-3

Infrared-spectra of the isotopic species 13CH3ONO, CH3¹⁸ONO, CH3O15NO and CH3ON18O, isolated in argon matrices, are reported.Spectral data together with earlier data on CH3ONO are used for derivation of 22 parameter harmonic valence force fields for both the cis and trans conformers and assignments are presented for all isotopic species in the two conformations.The valence force field will be used to propose assignments of cis and trans CD3ONO reported earlier by OGILVIE.A comparison of force constants of molecules with C-O, N-O, and N=O fragments and their dependence on conformation and structure is made.