Two novel bis-azomethines derived from quinoxaline-2-carbaldehyde.
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.
Varghese
Digna
D
Department of Applied Chemistry, Cochin University of Science and Technology, Cochin 682 022, Kerala, India.
Arun
V
V
Robinson
P P
PP
Sebastian
Manju
M
Leeju
P
P
Varsha
G
G
Yusuff
K K M
KK
D001391:Azo Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003959:Diamines / Q000737:chemistry*; D015394:Molecular Structure; D011810:Quinoxalines / Q000737:chemistry*; D013882:Thiosemicarbazones / Q000737:chemistry*
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