Fourier transform infrared and Raman spectra of uranyl bis(2-hydroxybenzaldehyde): UO2(sal)(2)

The Fourier transform infrared and Raman spectra of solid uranyl bis(2-hydr oxybenzaldehyde) were measured in the 4000-70 cm(-1) region. The fundamenta l skeletal vibrational modes were assigned by comparison with the spectra o f other uranyl complexes. The ligand bands in the complex were assigned wit h the aid of the infrared spectrum of the 2-hydroxybenzaldehyde calculated by the AM1 semi-empirical method, and with the aid of its experimental infr ared absorption bands and Raman shifts. A normal coordinate analysis had be en carried out to verify the experimental assignments of the [UO2L2] framew ork. Force constants for the skeletal vibrations of this complex were calcu lated. The polarized Raman spectrum of 2-hydroxybenzaldehyde is also report ed. (C) 2000 Elsevier Science B.V. All rights reserved.