1.
Acta Crystallogr Sect E Struct Rep Online
; 69(Pt 3): o376, 2013 Mar 01.
Article
in English
| MEDLINE
| ID: mdl-23476563
ABSTRACT
In the title compound, C10H6F2N4, the Car-N bonds are slightly shortened with respect to a standard aniline C-N bond [1.3580â (16) and 1.3618â (16) versus 1.39â Å], thus indicating some π-π conjgation with the electron-acceptor CN groups. The mol-ecule, except for two C atom of the ethyl-ene bridge, is nearly planar, the largest deviation of the other non-H atoms from the mean plane being 0.309â (2)â Å. The N-C-C-N torsion angle involving the ethyl-ene bridge is 50.23â (18)°. In the crystal, mol-ecules are connected by pairs of N-Hâ¯N hydrogen bonds into chains along [21-1].