N-亚水杨基亮氨酸3d金属配合物的合成及薄层色谱与紫外光谱研究

合成了亮氨酸水杨醛希夫碱及其与Ｍｎ（Ⅱ），Ｃｏ（Ⅱ），Ｎｉ（Ⅱ），Ｃｕ（Ⅱ），Ｚｎ（Ⅱ）的配合物。元素分析和摩尔电导测定的结果证明，亮氨酸水杨醛希夫碱３ｄ金属配合物配位比为１１，配合物在ＤＭＦ中为非电解质。在硅胶Ｇ板上，以乙酸乙酯－甲醇－丙酮－水－乙酸（４．４４３．３３２．２２０．２５０．１２，Ｖ／Ｖ）为流动相，研究了配合物的薄层色谱行为，各组分配合物的比移值Ｒｆ值相差较大，得到满意的分离，且Ｒｆ值按下列顺序递增Ｍｎ＜Ｚｎ＜Ｎｉ＜Ｃｕ＜Ｃｏ。讨论了系列配合物薄层色谱Ｒｆ与紫外光谱Ｒ带λｍａｘ变化关系的规律

Synthesis of N-salicylidene leucine 3d metal complexes and studies on their thin-layer chromatography and ultraviolet spectrum]

The Schiff base derived from salicylaldehyde and leucine and its Mn(II), Co(II), Ni(II), Cu(II), Zn(II) complexes were synthesized. The purity of the products obtained was confirmed by elemental analysis. The results of elemental analysis and molar conductance show that coordination ratio with M(II) is 1:1 and its complexes are non-electrolyte in DMF. The thin-layer chromatography behavior of complexes was studied on silica gel G plate with ethyl acetate-methanol-acetone-water-acetic acid (4.44:3.33:2.22:0.25:0.12, V/V) as mobile phase. The results show that the Rf value of complexes increases as follows Mn