Open AccessTwo oxazane macrocycles
Author(s) -
Cox Philip J.,
Lin Paul Kong Thoo
Publication year - 2004
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270104006687
Subject(s) - decane , ring (chemistry) , hydrogen bond , crystallography , chemistry , planar , chloride , crystal (programming language) , crystal structure , stereochemistry , molecule , organic chemistry , computer science , computer graphics (images) , programming language
The 20‐membered ring in 1,7,11,17‐tetraoxa‐2,6,12,16‐tetraazacycloeicosane tetrahydrochloride, C 12 H 32 N 4 O 4 4+ ·4Cl − , adopts an endo conformation, while the 18‐membered ring in 1,6,10,15‐tetraoxa‐2,5,11,14‐tetraazacyclooctadecane tetrahydrochloride, C 10 H 28 N 4 O 4 4+ ·4Cl − , lies about an inversion centre and adopts a symmetrical conformation. In the crystal structures of both compounds, the cations and chloride anions are linked by N—H⋯Cl hydrogen bonds into planar sheets of molecules; the sheets are linked into three‐dimensional networks via C—H⋯Cl hydrogen bonds.