1.
Acta Crystallogr E Crystallogr Commun
; 73(Pt 4): 550-552, 2017 Apr 01.
Article
in English
| MEDLINE
| ID: mdl-28435718
ABSTRACT
In the title biphenyl derivative, C12H9N3O4, the dihedral angle between the benzene rings is 52.84â (10)°. The nitro group attached to the benzene ring is inclined to the ring by 4.03â (2)°, while the nitro group attached to the amino-substituted benzene ring is inclined to the ring by 8.84â (2)°. In the crystal, mol-ecules are linked by two pairs of N-Hâ¯O hydrogen bonds, forming chains propagating along [101]. Within the chains, these N-Hâ¯O hydrogen bonds result in the formation of R22(20) and R22(14) ring motifs. The latter ring motif is reinforced by a pair of C-Hâ¯O hydrogen bonds, enclosing R21(6) ring motifs. The chains are linked by a second C-Hâ¯O hydrogen bond, forming a three-dimensional supra-molecular structure.