Hydrogen-bonded molecular ladders in trans-1,2-bis(2-nitroanilino)cyclohexane

Authors
Wardell, SMSV Wardell, JL Ward, MF Low, JN Glidewell, C
Citation
Smsv. Wardell et al., Hydrogen-bonded molecular ladders in trans-1,2-bis(2-nitroanilino)cyclohexane, ACT CRYST C, 56, 2000, pp. 865-867
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
56
Year of publication
2000
Part
7
Pages
865 - 867
Database
ISI
SICI code
0108-2701(200007)56:<865:HMLIT>2.0.ZU;2-N
Abstract
Crystals of the title compound, C18H20N4O4, contain equal numbers of (R,R) and(S,S) molecules, but these are not precise enantiomorphs, neither are th ey related by crystallographic symmetry; in addition, each molecule exhibit s approximate, but not exact, twofold rotational symmetry. There are intram olecular N-H ... O hydrogen bonds [N ... O 2.609 (4)-2.638 (5) Angstrom; N- H ... O 125-132 degrees] and the molecules are linked into molecular ladder s by C-H ... O hydrogen bonds [C ... O 3.306 (6)-3.386 (6) Angstrom; C-H .. . O 146-160 degrees].