title: Two novel bis-azomethines derived from quinoxaline-2-carbaldehyde.
abstract: The Schiff base compounds N,N'-bis[(E)-quinoxalin-2-ylmethylidene]propane-1,3-diamine, C(21)H(18)N(6), (I), and N,N'-bis[(E)-quinoxalin-2-ylmethylidene]butane-1,4-diamine, C(22)H(20)N(6), (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 pi-pi stacking interactions.
authors: Department of Applied Chemistry, Cochin University of Science and Technology, Cochin 682 022, Kerala, India.
authors: Digna
authors: D
authors: Varghese
authors: V
authors: V
authors: Arun
authors: P P
authors: PP
authors: Robinson
authors: Manju
authors: M
authors: Sebastian
authors: P
authors: P
authors: Leeju
authors: G
authors: G
authors: Varsha
authors: K K M
authors: KK
authors: Yusuff
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003959:Diamines / Q000737:chemistry*; D015394:Molecular Structure; D011810:Quinoxalines / Q000737:chemistry*; D013882:Thiosemicarbazones / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D003959:Diamines; C546045:N,N'-bis((E)-quinoxalin-2-ylmethylidene)butane-1,4-diamine; C546044:N,N'-bis((E)-quinoxalin-2-ylmethylidene)propane-1,3-diamine; D011810:Quinoxalines; D013882:Thiosemicarbazones; C512188:azomethine