Insights into the new Th (IV) sulfate fluoride complex: Synthesis, crystal structures, and temperature dependent spectroscopic properties

Under hydrothermal condition, the decomposition of methanesulfonic acid to sulfate anion is observed, resulting in the formation of a novel thorium sulfate fluoride compound ThF2(SO4)(H2O) (1). The temperature dependent UV-Vis-NIR absorption spectra and fluorescence spectra were collected from 77 K to 300 K, where the intensities of the peaks varied as a function of temperature. The Raman vibrational spectrum of the samples collected from 100 to 2000 cm−1 shows identical SO42− vibration modes.