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Fe^(3+)的荧光传感  

Syntheses, Crystal Structures and Fluorescence Sensing for Fe^(3+) of Transition Metal Complexes with 3,4,5,6-Tetrafluorophthalic Acid and N-Donor Ligands

作　　者：张美娜[1] 郑晓丽[1] 屈相龙[1] 李夏[1] 高源[1] 

机构地区：[1]首都师范大学化学系,北京100048

出　　处：《无机化学学报》2017年第7期1172-1180,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21471104);首都师范大学交叉科研项目资助

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]·2H_2O}n(3)。通过X射线单晶衍射分析测定了它们的结构。配合物1和2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1和3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1和3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Fe^(3+)离子。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-l-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 [MO4N~]. Complex 3 is two-dimensional structure. The configuration of center metal ion is distorted octahedral of [CdOsN]. Complexes I 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.

关 键 词：过渡金属配合物 四氟邻苯二甲酸 晶体结构 荧光 

分 类 号：O614.24[理学—无机化学] O614.813[理学—化学]