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Formation pathways and low-temperature crystal structures are reported for the molecular complexes [(DFBSA)2 ·(Me2N)2CO] (1; monoclinic, space group P21/c, Z' = 1) and [(DCBSA)2·Me2SO]·MeNO2 (2; triclinic, P1̄ , Z' = 1), where DFBSA= di(4-fluorobenzenesulfonyl) amine and DCBSA = di(4-chlorobenzenesulfonyl)amine. In both compounds, the aromatic disulfonylamines display extended conformations contrasting with the folded conformations recently described for three lamellar 1:1 complexes of composition (ArSO2)2NH·B (B = oxygen base). The components of 1 and 2 are three-dimensionally associated by a multitude of supramolecular synthons comprising a) in 1 and 2 two conventional N-H···O hydrogen bonds accepted by the carbonyl or sulfoxide function, b) in 1 fourteen and in 2 eleven weak C-H···O hydrogen bonds, c) in 1 three close C-H···F contacts, d) in 2 seven C-H···Cl hydrogen bonds, e) in 2 one Cl ··· Cl and two Cl···O interactions, f) in both structures a triad of aromatic rings that are π-stacked in the face-to-face mode. The interhalogen contact in 2 is of the type II, as characterized by C-Cl ··· Cl angles of 161 and 102°.

zeitschrift für naturforschung b

Polysulfonylamine, CLIX [1]. Eine Vielfalt supramolekularer Synthone in zwei Molekülkomplexen von Di(4-halogenbenzolsulfonyl)aminen mit Sauerstoffbasen / Polysulfonylamines, CLIX [1]. A Variety of Supramolecular Synthons in Two Molecular Complexes of Di(4-halobenzenesulfonyl)amines with Oxygen Bases