Double anomeric effects and a hydrogen-bonded supramolecular motif in N,N'-bis(3-nitrophenyl)methanediamine.
In the title compound, C(13)H(12)N(4)O(4), the molecule lies on a crystallographic twofold axis. Molecules are linked into complex sheets parallel to (100) via one N-H...O and two C-H...O hydrogen bonds. Within the molecule, the 3-nitroanilino fragment is essentially planar, and the C-N-C-N-C fragment assumes a nearly perpendicular/perpendicular conformation, with C-N-C-N torsion angles of 81.18 (18) degrees, which is controlled by a pair of adjacent anomeric interactions. The findings constitute the first demonstration of two anomeric effects existing in one N-C-N unit.
Zhang
Zhenfeng
Z
College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, People's Republic of China. zzf5188@sohu.com
Wang
Siqian
S
Zhang
Guisheng
G