Infra-Red Spectrum of Polyatomic Molecules XVI. Methyl-d3-Chloride and Methyl-d3-Bromide

Abstract

Methyl‐d₃‐chloride and methyl‐d₃‐bromide have been synthesized, their infra‐red spectrum in the range from 2.8 to 18μ measured, and a complete assignment of the fundamental frequencies has been given. A modified valence‐type potential function including two interaction terms fits the fundamental frequencies of the four molecules CH₃Cl, CD₃Cl, CH₃Br, and CD₃Br to within one percent.