Open AccessPolysulfonylamines. CXCI. The `almost' polymorphs rac ‐ trans ‐2‐aminocyclohexan‐1‐aminium di(methanesulfonyl)azanide and its 0.11‐hydrate
Author(s) -
Wölper Christoph,
Anwar Naveed,
Gulzar Naeem,
Jones Peter G.,
Blaschette Armand
Publication year - 2011
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270111020816
Subject(s) - hydrogen bond , hydrate , crystallography , chemistry , enantiomer , crystal structure , molecule , stereochemistry , ion , chirality (physics) , unit (ring theory) , group (periodic table) , solvent , atom (system on chip) , formula unit , physics , organic chemistry , nambu–jona lasinio model , chiral symmetry breaking , mathematics education , mathematics , quantum mechanics , computer science , embedded system , quark
The title compound, C 6 H 15 N 2 + ·C 2 H 6 NO 4 S 2 − , crystallizes as a 0.11‐hydrate, (I), in the space group C 2; the asymmetric unit consists of two cations (one of each enantiomer), one anion on a general position, two half anions, each with the N atom on a twofold axis, and approximately one fifth of a water molecule. The general anion departs significantly from the usual conformation: it lacks one of the typical `W'‐shaped sequence of O—S—N—S—O atoms. The compound also crystallizes in the solvent‐free form, (II), in the space group P 2 1 / c , with one formula unit in the asymmetric unit. Both compounds form ribbons of hydrogen‐bonded cation dimers parallel to the b axis. In (I), there are two independent ribbons of opposite chirality, each involving one anion on a special position, and these ribbons are connected by hydrogen bonds to the anion on a general position, resulting in a layer structure parallel to (100). In (II), the chains are connected by hydrogen bonds, and again a layer structure parallel to (100) results.