The crystal structure of selenoyl chloride, SeOCl2, has so far not been high up on the agenda in solid state chemistry research. The authors in the article published in Dalton transactions show that it can be used for the subsequent synthesis of novel compounds with the [SeCl3]+ cation, which they stabilized as disulfate [S2O7]2– and chlorosulfate [ClSO3]– salts, respectively. Both SeOCl2 and [SeCl3]+ salts show remarkable macromolecular arrangements and packing motifs in the solid state, so far not or only scarcely analyzed. Additionally they report the stabilization of the dication [Se2I4]2+ in the tetrasulfate salt [Se2I4]2[S4O13]2(SO3).