A third polymorph of N,N′-bis(pyridin-2-yl)benzene-1,4-diamine
oleh: Barbara Wicher, Maria Gdaniec
| Format: | Article |
|---|---|
| Diterbitkan: | International Union of Crystallography 2011-11-01 |
Deskripsi
A third polymorph of the title compound, C16H14N4, has been obtained. The molecule adopts a non-planar conformation with an E configuration at the two partially double exo C...;N bonds of the 2-pyridylamine units. Like in the triclinic form [Bensemann et al. (2002). New J. Chem. 26, 448–456], the recognition process between 2-pyridylamine units takes place through formation of a cyclic R22(8) hydrogen-bond motif, leading to the creation of tapes parallel to [001].