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二茂铁基含硫席夫碱及其配合物的合成与表征

Synthesis and Characterization of Sulf-shiff Bases Containing Ferrocenyl and Their Transition Metallic Complexes

【作者】 徐伟

【导师】 刘永红;

【作者基本信息】 扬州大学 , 有机化学, 2007, 硕士

【摘要】 过渡金属与席夫碱配体所形成的配合物以其多样的结构和广泛的用途愈来愈受到人们的重视。该类配合物在催化、生物活性及功能材料等领域都有广泛的应用前景。肼基二硫代甲酸酯衍生的席夫碱及其配合物具有很强的抗癌、抗病毒性能,而二茂铁具有改善药物的功能,一些二茂铁类的衍生物由于其强给电子性和电子桥联作用而显示出良好的非线性光学特性。基于它们的结构特性及其应用的广泛性,将肼基二硫代甲酸酯衍生的席夫碱与二茂铁类的衍生物联系起来研究引起了许多研究者的兴趣。本文合成了六种含硫席夫碱: (反)-间硝基肉桂酰基二茂铁缩-(S)-甲基二硫代碳酰腙(L1),(反)-间硝基肉桂酰基二茂铁-(S)-苄基二硫代碳酰腙(L2),(反)-呋喃亚甲基乙酰基二茂铁-(S)-甲基二硫代碳酰腙(L3),(反)-对甲基肉桂酰基二茂铁-(S)-甲基二硫代碳酰腙(L4),(反)-对溴(氯)肉桂酰基二茂铁-(S)-甲基二硫代碳酰腙(L5、L6)。并且得到了配体(HL1)和配合物(Zn(L12, Zn(L62)的单晶结构。另外还利用这些配体与过渡金属(Ni2+, Cd2+, Pb2+, Hg2+, Zn2+)共合成配合物24种。分别是: Ni(L12、Cd(L12、Pb(L12、Hg(L12、Zn(L12、Hg(L22、Zn(L22、Ni(L32、Cd(L32、Pb(L32、Hg(L32、Zn(L32、Ni(L42、Cd(L42、Pb(L42、Hg(L42、Zn(L42、Ni(L52、Cd(L52、Pb(L52、Hg(L52、Zn(L52、Cd(L62、Zn(L62。对上述配合物均进行了元素分析、红外光谱、紫外光谱、氢谱、摩尔电导率、循环伏安等表征。根据实验事实,本文推测了配合物的配位形式。实验证明了配体HL反式构型的二齿配体,是以亚胺中的N原子和烯硫醇式中的S原子为配位原子的。这些化合物的生理活性尚在测试中,将在以后报道。

【Abstract】 The complexes, synthesized with transition metal and Schiff’s bases, are more and more important for their various structures and extensive uses. The applied foreground of these complexes will be extensive in the field of catalysis, bioactivity and material etc. The Schiff’s bases from S-methyl(or benzyl)dithiocarbazate and their complexes have strongly antitumour and antivirus activities, while the ferrocenyl group can improve medicinal properties. Some ferrocene derivatives are excellent nonlinear optical materials, because they are strong electron donors and contain electron-flowing bridge. Due to their interesting structural character and wide-ranging uses, the studies of the Schiff base and ferrocene derivatives attracted many investigators’ attention.In this paper, six sulf-schiff bases, (E)-m-nitrocinnamoylferrocene condensed with S-methyldithiocarbazate (Ll), (E)-m-nitrocinnamoylferrocene condensed with S-benzyl dithiocarbazate (L2), (E)-3-(furan-2-yl)-1-ferrocenylprop-2-en-1-one condensed with S-methyldithiocarbazate (L3), (E)-p-methylcinnamoylferrocene condensed with S-meth- yldithiocarbazate (L4), (E)-p-bromo(or chloro)cinnamoylferrocene condensed with S-methyldithiocarbazate (L5, L6), had been synthesized and characterized. The crystal structure of the ligand (HL1) and complexes [Zn(L12, Zn(L62] had been determined by X-ray. These six Sulf-Schiff bases were used to synthesize the complexes with transition metal ions(Ni2+, Cd2+, Pb2+, Hg2+, Zn2+), and twenty-four complexes obtained. Zn(L12, Ni(L12, Cd(L12, Pb(L12, Hg(L12, Zn(L22, Hg(L22, Ni(L32, Cd(L32, Pb(L32, Hg(L32, Zn(L32, Ni(L42, Cd(L42, Pb(L42, Hg(L42, Zn(L42, Ni(L52, Cd(L52, Pb(L52, Hg(L52, Zn(L52, Cd(L62, Zn(L62. All of these complexes were characterized by elemental analysis, IR spectra, UV spectra, 1HNMR, molar conductance and cyclic voltammetry.The synthesis reaction mechanisms of the ligand and complexes were presumed by experiment facts. It is shown that HL appears to be a bidentate ligand with trans configuration to coordinate the metal through the azomethine nitrogen and thioenolic sulfur atom.The physiological activities of every compound are being tested and their results will be reported in the future.

  • 【网络出版投稿人】 扬州大学
  • 【网络出版年期】2007年 06期
  • 【分类号】O641.4
  • 【下载频次】224
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