Synthesis, Characterization, and Crystal Structures of N'2,N'6-Bis(benzylidene) pyridine-2,6-Dicarbohydrazide Derivatives.

N'²,N'⁶-bis(m-nilrobenzylidene)pyridine-2,6-dicarbohydrazid (a), N'²,N'⁶-bis(p-nitro benzylidene)pyridine-2,6-dicarbohydrazid (b), and N'²,N'⁶-bis(p-chlorobenzylidene) pyridine-2,6-dicarbohydrazid (c) were synthesized and characterized by ¹H NMR, Mass Spectroscopy, and Infrared Spectroscopy. The single crystals of compound C₂₇ H₂₉N9O₁₁ (1), C₂₇H₂₉Ni)O₁₁ (2), and C₂₁H₁₅CI₂N₅O₄ (3) were characterized by X-ray singlecrystal diffraction analysis. The crystal structure analysis revealed that compound 1 crystallizes in a monoclinic system, space group C2/c, a = 24.6504(10) Å, b = 10.4624(6) Å, c = 14.4850(6) Å. The compound 2 crystallizes in monoclinic system, space group C2/c, a = 24.6505(9) Å, b = 10.4618(4) Å, c = 14.4946(5) Å. The compound 3 crystallizes in a monoclinic system, space group P2 (l)/n, a = 8.6377(9) A, b = 14.4815(15) Å, c= 17.6598(19) Å. [ABSTRACT FROM AUTHOR]