Infrared Spectra of the Hydrated Borates.

Infrared absorption spectra of 42 different hydrated borates were obtained in the 2000-300 cm-1 range. A few spectra were obtained between 4000 and 2000 cm-1. Most spectra are complex and cannot be interpreted satisfactorily except in the case of the simplest anions. Many correlations between spectra are possible, however, and possible anion types have been deduced. Differentiation between triangular and tetrahedral boron is possible on the basis of the spectra but IS less certain than in the case of the anhydrous borates.