Two novel bis-azomethines derived from quinoxaline-2-carbaldehyde
First published: 07 December 2009
K. K. M. Yusuff, e-mail: [email protected].
Abstract
The Schiff base compounds N,N′-bis[(E)-quinoxalin-2-ylmethylidene]propane-1,3-diamine, C21H18N6, (I), and N,N′-bis[(E)-quinoxalin-2-ylmethylidene]butane-1,4-diamine, C22H20N6, (II), crystallize in the monoclinic crystal system. These molecules have crystallographically imposed symmetry. Compound (I) is located on a crystallographic twofold axis and (II) is located on an inversion centre. The molecular conformations of these crystal structures are stabilized by aromatic π–π stacking interactions.
