Department of Chemistry, Faculty of Science, Lorestan University, Khorramabad, Iran.
Spectrochim Acta A Mol Biomol Spectrosc. 2013 Apr;106:80-5. doi: 10.1016/j.saa.2012.12.044. Epub 2013 Jan 5.
The new Schiff base 4,4'-(1E,1'E)-(3,3'-(1E,1'E)-(pyridine-2,6-diylbis(azan-1-yl-1-ylid ene))bis(methan-1-yl-1-ylidene)bis(4-hydroxy-3,1-phenylene))bis(diazene-2,1-diyl)dibenzoic acid (1) was prepared from the condensation reaction of 2,6-diaminopyridine with 4-((3-formyl-4-hydroxyphenyl)diazenyl)benzoic acid in methanol. The compound 1 is potentially an N, O multidentate chelating ligand which could form stable complexes with metal ions in 1:1 up to 1:3mol ratio of metal to ligand. The 1:1 complexes of Schiff base 1 with Ni(II), Pb(II), Zn(II) and Cd(II) have been synthesized by its condensation reaction with appropriate salts of metal ions. Structures of Schiff base (1) as well as its complexes with abovementioned metal ions were characterized by elemental analysis, mass, IR, UV-vis., (1)H and (13)С NMR spectroscopy.
新型席夫碱 4,4'-(1E,1'E)-(3,3'-(1E,1'E)-(吡啶-2,6-二基双(氮烷-1-基-1-亚基))双(甲烷-1-基-1-亚基)双(4-羟基-3,1-亚苯基))双(二氮烯-2,1-二基)二苯甲酸（1）由 2,6-二氨基吡啶与 4-((3-甲酰基-4-羟基苯基)偶氮基)苯甲酸在甲醇中的缩合反应制备而成。化合物 1 是一种潜在的 N、O 多齿螯合配体，可与金属离子形成稳定的配合物，金属离子与配体的摩尔比为 1:1 至 1:3。通过与适当的金属离子盐的缩合反应，合成了席夫碱 1 与 Ni(II)、Pb(II)、Zn(II)和 Cd(II)的 1:1 配合物。席夫碱（1）及其与上述金属离子的配合物的结构通过元素分析、质量、IR、UV-vis、(1)H 和 (13)C NMR 光谱进行了表征。
