E. Faulques et al., RAMAN STUDIES OF URANYL-NITRATE AND ITS HYDROXY BRIDGED DIMER, Spectrochimica acta. Part A: Molecular spectroscopy, 50(4), 1994, pp. 757-763
In this paper, the authors report Raman spectra obtained on imidazoliu
m di-mu-hydroxybis[dioxobis-(nitrato)uranium(VI)], (UO2(NO3)2(OH))2.2C
3H5N2 (IUNH). An assignment of the Raman bands is made by comparing th
e spectrum of IUNH with those of uranyl nitrate hexahydrate (UNH) and
imidazole (IMID). The electron charge transfer from the imidazole ring
to the uranyl ion has been empirically determined.