首页> 外文期刊>Journal of Molecular Structure >The first structurally characterized sulfonamide derivatized Zn(II)-dipicolylamine complexes with eight membered chelate rings. Synthetic and structural studies
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The first structurally characterized sulfonamide derivatized Zn(II)-dipicolylamine complexes with eight membered chelate rings. Synthetic and structural studies

机译:第一种结构表征衍生衍生化的Zn(II) - 具有八个元螯合物环的二丙基胺配合物。 合成和结构研究

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Di(2-picolyl)amine has attracted a great deal of attention as the most popular chelating group in synthesizing biological sensors to detect zinc(II) ions. This study reveals the first structurally characterized zinc complexes of the sulfonamide derivatized di(2-picolyl)amine (dpa) moiety with a rare eight membered chelate ring. The novel synthesized zinc(II) complexes; Zn(N(SO(2)R(1)dpa)Cl-2 (C1), Zn(N(SO(2)R(2)dpa)Cl-2 (C2), Zn(N(SO(2)R(3)dpa)Cl-2 (C3), where R-1 = 1-naphthalene, R-2 = 2-naphthalene, R-3 = 5-(dimethylamino)naphthalene were characterized using single crystal X-ray diffraction analysis, H-1 NMR, FTIR, UV-Visible and fluorescence spectroscopy. Structural analysis showed that the complexes possess distorted tetrahedron geometry around the zinc centre and that the zinc metal centre is bound to the two pyridyl nitrogens of the dpa group in a bidentate fashion creating a large eight membered chelate ring. The signal attributed to the methylene group (CH2) in the free ligand spectra remains a singlet in the H-1 NMR spectra of the zinc complexes but has shifted more downfield. Spectral studies of the complexes revealed that the complexes are fluorescent at concentrations of 0.1 mM with intense fluorescence peaks (C1: 335 nm, C2: 343 nm and C3: 528-551 nm) and, thus, can be further investigated on their potential to be used as imaging agents or biological sensors. (C) 2020 Elsevier B.V. All rights reserved.
机译:DI(2-吡酰基)胺作为最受欢迎的螯合组吸引了在合成生物传感器中的最普遍的螯合组来检测锌(II)离子。该研究揭示了磺胺胺衍生化二(2-吡酰基)胺(DPA)部分的第一结构表征锌络合物,其具有稀有八个元螯合环。新颖的合成锌(II)配合物; Zn(如(2)R(1)DPA)Cl-2(C1),Zn(如(2)R(2)DPA)Cl-2(C2),Zn(N(SO(2) R(3)DPA)Cl-2(C3),其中R-1 = 1-萘,R-2 = 2-萘,R-3 = 5-(二甲基氨基)萘进行了单晶X射线衍射分析,H-1 NMR,FTIR,UV可见和荧光光谱。结构分析表明,络合物在锌中心周围具有扭曲的四面体几何形状,并且锌金属中心以双齿时尚的DPA组的两个吡啶基氮结合创造一个大的八个成员螯合环。归因于游离配体光谱中的亚甲基(CH2)的信号仍然是锌络合物的H-1 NMR光谱中的单态,但已经移位了更多的下场。复合物的光谱研究显示荧光浓度为0.1mm,荧光峰(C1:335nm,C 2:343nm和C 3:528-551nm),并且因此可以进一步研究其用作成像剂的潜力或生物传感器。 (c)2020 Elsevier B.v.保留所有权利。

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