首页> 外文期刊>RSC Advances >Synthesis, crystal structures, and luminescent properties of Zn(ii), Cd(ii), Eu(iii) complexes and detection of Fe(iii) ions based on a diacylhydrazone Schiff base
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Synthesis, crystal structures, and luminescent properties of Zn(ii), Cd(ii), Eu(iii) complexes and detection of Fe(iii) ions based on a diacylhydrazone Schiff base

机译:Zn(II),CD(II),Eu(III)复合物和基于二酰基腙Schiff碱的Fe(III)离子的合成,晶体结构和发光性能

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Acylhydrazone Schiff bases are rich in N and O atoms to coordinate with metal ions to form multidentate complexes. In this study, a novel diacylhydrazone Schiff base ( N ′ ~(1) E , N ′ ~(4) E )- N ′ ~(1) , N ′ ~(4) -bis(2-hydroxy-5-nitrobenzylidene)succinohydrazide ( H _(4) L ) was synthesized from the condensation of nitrosalicylaldehyde and succinic dihydrazide. The interactions of H _(4) L with common monovalent, divalent and trivalent metal ions were investigated by ultraviolet spectroscopy and fluorescence spectroscopy. The results showed that H _(4) L had no obvious effect on the monovalent metal ions (Li ~(+) , Na ~(+) , K ~(+) ), but reacted with most divalent and trivalent metal ions, and showed single selectivity in the fluorescence recognition of Fe ~(3+) ions. More importantly, three kinds of binuclear molecular structures, [Zn _(2) (H _(2) L) _(2) ]·5DMF ( Zn-L ), [Cd _(2) (H _(2) L) _(2) ]·DMF·H _(2) O ( Cd-L ) and [Eu _(2) (H _(2) L) _(3) ]·6DMSO ( Eu-L ), have been studied to further illustrate the interaction mode of diacylhydrazone Schiff base and metal ions. In addition, the optical properties of these crystallized complexes have been studied in DMF solution.
机译:酰基腙席夫碱含有富含N和O原子,以与金属离子坐标以形成多型络合物。在该研究中,一种新型二酰基腙Schiff碱(N'〜(1)E,N'〜(4)E) - N'〜(1),N'〜(4) - (2-羟基-5-硝基苄基)求求生(H _(4)L)由硝基水杨醛和琥珀酸二酰肼的缩合合成。通过紫外光谱和荧光光谱研究了H(4)L与共同的一价,二价和三价金属离子的相互作用。结果表明,H _(4)L对单价金属离子没有明显影响(Li〜(+),Na〜(+),K〜(+)),但与大多数二价和三价金属离子反应在Fe〜(3+)离子的荧光识别中显示出单一选择性。更重要的是,三种双核分子结构,[Zn _(2)(H _(2)(2))_(2)]·5DMF(Zn-L),[CD_(2)(H _(2)L. )_(2)]·DMF·H _(2)O(CD-L)和[EU _(2)(H _(2)L)_(3)]·6DMSO(EU-L)已成为研究进一步说明了二酰肼席夫碱和金属离子的相互作用模式。此外,已经在DMF溶液中研究了这些结晶配合物的光学性质。

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