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

Abstract The Fourier transform infrared and Raman spectra of solid uranyl bis(2-hydroxybenzaldehyde) were measured in the 4000–70 cm −1 region. The fundamental skeletal vibrational modes were assigned by comparison with the spectra of other uranyl complexes. The ligand bands in the complex were assigned with the aid of the infrared spectrum of the 2-hydroxybenzaldehyde calculated by the AM1 semi-empirical method, and with the aid of its experimental infrared absorption bands and Raman shifts. A normal coordinate analysis had been carried out to verify the experimental assignments of the [UO 2 L 2 ] framework. Force constants for the skeletal vibrations of this complex were calculated. The polarized Raman spectrum of 2-hydroxybenzaldehyde is also reported.