INFRARED AND RAMAN SPECTRA OF ORTHOROMBIC, MONOCLINIC AND CUBIC METABORIC ACID AND THEIR RELATION TO THE STRENGTH OF THE HYDROGEN BOND PRESENT

Article abstract of DOI:10.1016/0022-2860(80)80122-0

Infrared and Raman spectra of the three forms of metaboric acid (orthorombic, monoclinic and cubic) are presented and discussed.The behaviour of the asymmetric stretching vibration ν_OH and of the in-plane and out-of-plane deformations δ_OH and γ_OH shows that hydrogen bonds of different strengths are present in the three forms of metaboric acid, in accordance with X-ray diffraction measurements.This phenomenon is explained in a qualitative way by a valence bond treatment of the structural centres present in the three forms of metaboric acid.The remaining vibrational modes are related to the analogous modes present in borates and polyborates of known structure.