Anhydrous B(OH)3was pressed into a pellet and sublimed at room temperature under vacuum to give molecular B(OH)3for argon matrix infrared study. The spectrum showed sharp fundamentals without the effect of hydrogen bonding observed in the solid. Fermi resonances were characterized for two fundamentals. The observed frequencies for B(OH)3and the three deuterium substituted molecules are in agreement with values from selfhyphen;consistent field/double zeta plus polarization (SCF/DZP) calculations allowing for appropriate scale factors. The major thermal decomposition products from pulsed laser evaporation of B(OH)3were H2O, B2O3, and HOBO. Molecular HOBO was characterized by a strong 2020 cmminus;1fundamental, which was confirmed by SCF/DZP calculations.
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