Knowledge Bank

The low-frequency ($0-200cm-1$) infrared and Raman spectra of several bismuth halogen complexes have been recorded and analyzed. The complexes studied included those with formulas $R3BiX6$, $R2BiX5$, $RBiX4$, and $R3Bi2X9$ where $X=Br$ or $I$ and $R$ is an organic cation. The stretching and bending modes of these complexes have been assigned and spectra have been correlated to the molecular structures.