Infrared Spectra of CH3COONa and CD3COONa and Assignments of Vibrational Frequencies

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Abstract
The absorption spectra of solid CH3COONa and CD3COONa have been observed from 350—5000 cm‐1. All of the fundamental frequencies of the acetate ion have been observed and assigned with the exception of that of the torsional oscillation. The assignments for CH3NO2 and CD3NO22,3 were used as an aid in assigning the CH3CO2‐ and CD3CO2‐ frequencies. An approximate force constant, 9.3×105 dynes/cm, is given for the C–O bond of CH3CO2‐ in solid sodium acetate. The spectra of the partially deuterated species were observed and assignments were made with the aid of the Decius‐Wilson sum rule and the Teller‐Redlich product rule.