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首页> 外文期刊>Chemistry: A European journal >Homo- and Heteronuclear Compounds with a Symmetrical Bis-hydrazone Ligand: Synthesis, Structural Studies, and Luminescent Properties
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Homo- and Heteronuclear Compounds with a Symmetrical Bis-hydrazone Ligand: Synthesis, Structural Studies, and Luminescent Properties

机译：具有对称双-配体的同核和杂核化合物：合成，结构研究和发光性质。

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摘要

Nine new coordination compounds have been synthesized by the reaction of salts of bivalent metal ions (a=Zn-II, b=Cu-II, c=Ni-II, d=Co-II) with the bis(benzoylhydrazone) derivative of 4,6-diacetylresorcinol (H4L). Three kinds of complexes have been obtained: homodinuclear compounds [M-2(H2L)(2)]nH(2)O (1a, 1b, 1c, and 1d), homotetranuclear compounds [M-4(L)(2)]n(solv) (2a and 2c), and heterotetranuclear compounds [Zn2M2(L)(2)]n(solv) (2ab, 2ac, and 2ad). The structures of the free ligand H(4)L2DMSO and its complexes [Zn-2(H2L)(2)(DMSO)(2)] (1a*), [Zn-4(L)(2)(DMSO)(6)] (2a*), and [Zn0.45Cu3.55(L)(2)(DMSO)(6)]2DMSO (2ab*) were elucidated by single-crystal X-ray diffraction. The ligand shows luminescence properties and its fluorimetric behavior towards M-II metals (M=Zn, Cu, Ni and Co) has been studied. Furthermore, the solid-state luminescence properties of the ligand and compounds have been determined at room temperature. (HNMR)-H-1 spectroscopic monitoring of the reaction of H4L with Zn-II showed the deprotonation sequence of the OH/NH groups upon metal coordination. Heteronuclear reactions have also been monitored by using ESI-MS and spectrofluorimetric techniques.
机译：通过二价金属离子的盐（a = Zn-II，b = Cu-II，c = Ni-II，d = Co-II）与4的双（苯甲酰hydr）衍生物的反应合成了九种新的配位化合物，6-二乙酰间苯二酚（H4L）。已获得三种配合物：同核化合物[M-2（H2L）（2）] nH（2）O（1a，1b，1c和1d），同四核化合物[M-4（L）（2）]。 n（solv）（2a和2c）以及异四核化合物[Zn2M2（L）（2）] n（solv）（2ab，2ac和2ad）。游离配体H（4）L2DMSO及其配合物[Zn-2（H2L）（2）（DMSO）（2）]（1a *），[Zn-4（L）（2）（DMSO）（通过单晶X射线衍射阐明了[6）]（2a *）和[Zn0.45Cu3.55（L）（2）（DMSO）（6）] 2DMSO（2ab *）。该配体显示出发光性质，并且已经研究了其对M-II金属（M = Zn，Cu，Ni和Co）的荧光行为。此外，已经在室温下确定了配体和化合物的固态发光性质。 （HNMR）-H-1光谱监测H4L与Zn-II的反应，显示金属配位后OH / NH基团的去质子序列。还通过使用ESI-MS和荧光光谱技术监测了异核反应。

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