Knowledge Bank

The infrared spectra of Prussian blue and compounds of the type $M2[Fe(CN)6$ where $M=Cu,Zn$, Cd have been obtained in the region $33-4000cm-1$. In addition, Prussian blue has been spectroscopically studied in the temperature range $300\circ K-4\circ K$. Spectra obtained at $300\circ K$ and $77\circ K$ are different in the region of the Fe-C stretching motion. The infrared spectra will be correlated with the x-ray, magnetic susceptibility, and Mossbauer studies in an effort to clarify the structures of the metal-iron cyanide compounds.