Recent research has shed light on halido-sulfates (XSO₃^-) and halide-methanesulfonates (X₃CSO₃^-) beyond the well-studied fluorine compounds. While fluorosulfates and trifluormethanesulfonates are well-documented, the heavier congeners and pseudo-halido-sulfates (YSO₃^-, where Y = CN^-, N₃^-, SCN^-, OCN^-) remain largely unexplored. The study introduced a novel synthesis method to produce these compounds by reacting pseudo-halide anions with SO₃, successfully preventing oxidation.

Additionally, the research tackled the challenging synthesis of halide-methanesulfonates, successfully creating the "trichlate" anion Cl₃CSO₃^- through a multi-step process. The team also synthesized the bromo-derivative, leading to the crystallization of the new anion "tribrate" (Br₃CSO₃^-). These findings open new avenues for understanding the chemistry of these compounds and their potential applications.