Infrared Spectra of Sodium and Potassium Cyanide

1 September 1961

journal article
conference paper
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 35 (3) , 774-775
https://doi.org/10.1063/1.1701215

Abstract

The infrared absorption spectra of sodium cyanide and potassium cyanide vapors have been measured in the region 3500 to 200 cm^‐1. Two absorptions assigned as fundamental frequencies of the monomeric species were found in each system. The absorption frequencies and their present assignments are: NaCN ν₂=238, ν₃=2176 cm^‐1; KCN ν₂=207, ν₃=2158 cm^‐1. A third absorption at 2076 cm^‐1 in sodium cyanide vapor is assigned to the dimer of NaCN. The bond‐stretching force constant of the CN group in XCN molecules is sensibly independent of the electronegativity of X. The angle‐bending force constant varies directly with the electronegativity of X.

Keywords

This publication has 8 references indexed in Scilit:

Vibrational Spectrum of Cyanate Ion in Various Alkali Halide Lattices
The Journal of Chemical Physics, 1959
Anharmonic potential function for polyatomic molecules
Collection of Czechoslovak Chemical Communications, 1958
Infrared Spectra of the Alkali Halides. I. Lithium Halides
The Journal of Chemical Physics, 1957
Infrared Spectra of Hydrogen Cyanide and Deuterium Cyanide
The Journal of Chemical Physics, 1956
Microwave Spectra of the Alkali Halides
Physical Review B, 1954
Infrared Spectra and Characteristic Frequencies of Inorganic Ions
Analytical Chemistry, 1952
The electronic structures of carbon monoxide and carbon dioxide
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1949
The Nuclear Magnetic Moments of $N^{14}$ , ${Na}^{23}$ , $K^{39}$ and ${Cs}^{133}$
Physical Review B, 1939