Polysulfonylamine, LXV [1] Eine neue zentrosymmetrische Festkörper-Konformation von 18-Krone-6: Darstellung und Kristallstrukturen der monomeren Supramoleküle (CH2CH2O) 6 · 2 HN (SO2-2-Naphthyl)2 und (CH2CH2O) 6 · 2 iPrOH · 2 HN(SO2Ph)2 / Polysulfonylamines, LXV [1] A Novel Centrosymmetric Solid-State Conformation of 18-Crown-6: Synthesis and Crystal Structures of the Monomeric Supramolecules (CH2CH2O) 6 · 2 HN (SO2-2-Naphthyl)2 and (CH2CH2O) 6 · 2 iPrOH · 2 HN(SO2Ph)2
The complexes 18 C 6 · 2 HN (SO2-2 -Naphthyl)2 (2a) and 18 C 6 · 2 iPrOH · 2 HN (SO2Ph)2 (3e) were obtained by co-crystallization of 18-crown-6 (18 C 6) with the appropriate di(arenesulfonyl) amine from isopropanol solutions at temperatures ≥20 °C (for 2a) or at - 20 °C (for 3e). Both structures contain isolated formula units displaying crystallographic inversion symmetry. The conformation of the crown rings is characterized by the torsion angle sequence g+g+aag−g+ag+ag−g−aag+g−ag−a, unprecedented in solid-state structures of 18C 6 complexes. The six ether oxygen atoms and four out of twelve carbon atoms of the ring are coplanar within ± 7 pm. In 2a (triclinic, space group P 1̄) , the disulfonylamine molecules are linked to the oxygen atoms of the g±g∓g∓ units via N -H ··· O hydrogen bonds ( H ··· O 201 pm, N - H ··· O 161°). In 3e (triclinic, space group P 1̄ ) , each amine is N - H ··· O bonded to an isopropanol molecule (H ··· O 193 pm , N - H ··· O 175°) that is connected to a crown oxygen atom of the same conformational type as indicated above for 2a (H ··· O 198 pm, O - H ··· O 166°).