Infrared spectrum of acetonitrile-15N

Abstract

Acetonitrile-15N has been synthesized from ammonium chloride with a 99.4% 15N isotopic content. The IR spectrum of the liquid has been recorded in the range 10,000-20 cm−1 and some new assignments have been proposed particularly in the range 10,000-4,000 cm−1. The spectrum of the gas has been recorded in the range 4,000-200 cm−1 and ν5 and ν7 have been analyzed as well as the ν6, ν7 + ν8 Fermi resonant band system. Molecular parameters suitable for force constant refinements have been calculated.