3,4,5,6-四氟邻苯二甲酸与含氮配体的过渡金属配合物的合成、晶体结构及对Fe3+的荧光传感
Syntheses,Crystal Structures and Fluorescence Sensing for Fe3+ of Transition Metal Complexes with 3,4,5,6-Tetrafluorophthalic Acid and N-Donor Ligands
作者单位E-mail
张美娜 首都师范大学化学系, 北京 100048  
郑晓丽 首都师范大学化学系, 北京 100048  
屈相龙 首都师范大学化学系, 北京 100048  
李夏 首都师范大学化学系, 北京 100048 xiali@mail.cnu.edu.cn 
高源 首都师范大学化学系, 北京 100048  
摘要: 利用过渡金属盐与3,4,5,6-四氟邻苯二甲酸(H2TFPT)、1,3-二(4-吡啶基)-丙烷(DPP)和1,4-二(1,2,4-三氮唑)-1-丁烷(BTB)经水热法合成了3个新的配合物:{[M(TFPT)(DPP)]·H2O}n(M=Cd(1),Ni(2)),{[Cd(TFPT)(BTB)0.5]·2H2O}n3)。通过X射线单晶衍射分析测定了它们的结构。配合物12具有相似的一维链结构。中心金属离子表现为扭曲的[MO4N2]八面体构型。配合物3具有二维结构。中心金属离子表现为扭曲的[CdO5N]八面体构型。配合物13分别在424 nm、442 nm处出现来自于配体的荧光发射,对应于配体的π*-π的跃迁,配合物2在356 nm处有非常弱的荧光发射。不同金属阳离子对配合物13的荧光强度有不同程度的影响,并且通过荧光的猝灭机理,它们都能选择性检测Fe3+离子。
关键词: 过渡金属配合物  四氟邻苯二甲酸  晶体结构  荧光
基金项目: 国家自然科学基金(No.21471104)和首都师范大学交叉科研项目资助
Abstract: Three new complexes,{[M (TFPT)(DPP)]·H2O}n(M=Cd (1),Ni (2)),{[Cd (TFPT)(BTB)0.5]·2H2O}n(3) were synthesized by using transition metal salts,3,4,5,6-tetrafluorophthalate (TFPT),1,3-di (4-pyridyl)-propane (DPP) and 1,4-bis (1,2,4-triazol-1-yl) butane (BTB) by hydrothermal method.The crystal structures were determined by single crystal X-ray diffraction.Complexes 1 and 2 have similar one-dimensional chain structure.The configuration of center metal ion is distorted octahedral of[MO4N2].Complex 3 is two-dimensional structure.The configuration of center metal ion is distorted octahedral of[CdO5N].Complexes 1 and 3 have ligand-based fluorescence emissions,which are corresponding to π*-π transition of the ligand at 424 nm and 442 nm,respectively.Complex 2 has very weak fluorescence emission at 356 nm.It is interesting to note that different metal cations have different effects on fluorescence of complexes 1 and 3.They would be regarded as a sensor for Fe3+ ions in aqueous solutions via a fluorescence quenching mechanism.
Keywords: transition metal complexes  3,4,5,6-tetrafluorophthalic acid  crystal structure  fluorescence
投稿时间:2016-12-27 修订日期:2017-05-09
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张美娜,郑晓丽,屈相龙,李夏,高源.3,4,5,6-四氟邻苯二甲酸与含氮配体的过渡金属配合物的合成、晶体结构及对Fe3+的荧光传感[J].无机化学学报,2017,33(7):1172-1180.
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