Raman scattering and infrared absorption from the C-N stretching modes of K2Pt(CN)4Br0.3 · 3H2O

Abstract

We have carefully measured the Raman scattering and infrared absorption spectra of the C-N stretching region of ${\mathrm{K}}_2$Pt${\mathrm{}\left(\mathrm{CN}\right)\mathrm{}}_4$ ${\mathrm{Br}}_{0.3}$ · 3${\mathrm{H}}_2$O. The expected polarization differences between $B_{1g}$ and $B_{2g}$ modes were observed along with a large frequency splitting between the modes. We attribute this frequency splitting to significant differences in the environment of the two platinum sites in the crystallographic unit cell.