1.
Acta Crystallogr Sect E Struct Rep Online
; 65(Pt 1): o194-5, 2008 Dec 24.
Article
in English
| MEDLINE
| ID: mdl-21581649
ABSTRACT
The title compound, C(16)H(12)N(2)O(6)·2C(3)H(7)NO, lies across a crystallographic inversion centre which is situated at the midpoint of the central N-N bond. The substitution at the C=N bond adopts a trans configuration and it is essentially coplanar with the benzene ring [N-C-C-C torsion angles = -173.9â (4) and 6.4â (6)°]. All torsion angles involving non-H atoms are close to 180°. Intra-molecular O-Hâ¯O and weak C-Hâ¯O hydrogen bonds form S(6) and S(5) ring motifs, respectively, while inter-molecular O-Hâ¯O and weak C-Hâ¯O hydrogen bonds connect the Schiff base mol-ecule to solvent dimethyl-formamide mol-ecules.