High Resolution FTIR Spectroscopy of 1,3,5-Triazine*: The Parallel Bands v₁₁ and v₁₂ of ¹²C₃ ¹⁴N₃H₃, ¹³C₃ ¹⁴N₃H₃ , ¹²C₃ ¹⁵N₃H₃ , ¹³C₃ ¹⁵N₃H₃ and ¹²C₃ ¹⁴N₃D₃

Abstract

Abstract The present contribution reports on the analysis of the high resolution FTIR spectra of the only two IR-active parallel fundamentals ν 11 and ν 12 of the isotopomers 12 C 3 14 N 3 H 3 , 13 C 3 14 N 3 H 3 , 12 C 3 15 N 3 H 3 , C 3 15 N 3 H 3 and 12 C 3 14 N 3 D 3 , respectively, of 1,3,5-triazine. The molecular constants of the ground state and the upper states ν 11 = 1 and ν 12 = 1, respectively, for all molecules under consideration are listed. The enhancement of the P-and the depletion of the R-banches, observed in the v 11 bands of all non-deuterated isotopomers, is discussed, and the Herman-Wallis constants obtained are given.