Study on mass spectrometric behavior of samarium di-iodide in tetrahydrofuran solution

The mass spectrometric behavior of the SmI2 in tetrahydrofuran (THF) solution was studied by ESI-Q-MS/MS and ESI-TOF-MS. Results obtained show that the trivalent samarium ions were the dominating species observed, which could be explained by the electron donor nature of the SmII. The rich coordination chemistry around SmII and SmIII centers were also discussed. Besides, the fast ligand exchange of the THF-solvated samarium complexes with hexamethylphosphoramide (HMPA) was monitored by on-line ESI-Q-MS, which demonstrated the strong coordination of HMPA to samarium.