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Menati, Mir, Notash. Synthesis, characterization and crystal structure of a new azo-Schiff base "ethyl 2-((E)-(4-((E)-(4-ethylphenyl)diazenyl)-2-hydroxybenzylidene)amino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate". www.ijcm.ir 2020; 28 (3) :789-796
URL: http://ijcm.ir/article-1-1530-en.html
Abstract:   (1377 Views)
A new azo-Schiff base"Ethyl 2-((E)-(4-((E)-(4-ethylphenyl)diazenyl)-2-hydroxybenzylidene)amino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate" was prepared by the reaction of "Ethyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate" and "(E)-5-((4-ethylphenyl)diazenyl)-2-hydroxybenz aldehyde" (1:1 molar ratio) in MeOH under reflux condition. The structure of compound was studied by elemental analysis, including IR and 1HNMR spectroscopy and single crystal X-ray diffraction method. The synthesized compound has been crystallized in triclinic system with Pī space group and a = 9.752 (2)Å, b = 10.349(2)Å, c = 13.263(3)Å, α = 87.72(3)˚, β = 75.80(3)˚, γ = 62.21(3)˚ cell parameters. The final R value is 0.098 for 4038 independent reflections. X-ray diffraction results confirm the planar geometric structure with a slight deviation and intermolecular hydrogen bond for the compound.
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