Polysulfonylamine Polysulfonylamine, CXXXVIII [1], 1.1-Di(organosu!fonyl)-3,3-diorganylharnstoffe: Synthese von acht Vertretern und Kristallstruktur des Prototyps (MeSO2)2N-C(O)-NMe2 / Polysulfonylamines, CXXXVIII [1]. 1.1-Di(organosulfonyl)-3,3-diorganylureas: Synthesis of Eight Representatives and Crystal Structure of the Prototype (MeSO2)2N-C(O)-NMe2