| 两个基于4-(1H-1,2,4-三氮唑)苯甲酸的4d-4f异核配位聚合物的合成、结构及荧光性质 |
| Two Heterometallic 4d-4f Coordination Polymers Based on 4-(1H-1,2,4-Triazol-1-yl)benzoic Acid: Syntheses, Structures, and Fluorescence Properties |
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| 摘要: 以4-(1H-1,2,4-三氮唑)苯甲酸(Htbc)为配体,采用水热法合成了两种新型4d-4f配位聚合物{[EuAg(tbc)3(H2O)]ClO4·H2O}n(1)和{[Eu2Ag3(tbc)6(NO3)2(H2O)2](ClO4)2·2H2O}n(2)。运用X射线单晶衍射法对该配位聚合物进行了结构测定,并对其进行了元素分析、红外光谱、PXRD及荧光光谱表征。单晶结构表明,配位聚合物1为正交晶系,空间群P212121,由一维三股螺旋链(其中2股右手螺旋和1股左手螺旋)通过Ag将其连成二维平面。配位聚合物2属于三斜晶系,空间群为P1,由内消旋一维两股螺旋链通过Ag将其连成二维平面。配位聚合物1和2的二维链结构均通过非共价键作用形成三维超分子, 同时也表征了配位聚合物1和2的荧光性质。 |
| 关键词: 4-(1H-1,2,4-三氮唑)苯甲酸 异核 晶体结构 |
| 基金项目: 国家自然科学基金(No.21365012)资助项目。 |
| Abstract: Two 2D heterometallic 4d-4f coordination polymers, {[EuAg(tbc)3(H2O)]ClO4·H2O}n (1) and {[Eu2Ag3(tbc)6(NO3)2(H2O)2](ClO4)2·2H2O}n (2) (Htbc=4-(1H-1,2,4-triazol-1-yl) benzoic acid) were synthesized under hydro-thermal condition using one-step approach and structurally characterized by elemental analysis, FT-IR, powder X-ray diffraction and single-crystal X-ray diffraction. The single-crystal X-ray diffraction analysis reveals that the two complexes present two different types of two dimensional (2D) structures. Complex 1 crystallized in an orthorhombic manner having a P212121 space group, consisting of 1D triple-stranded helical (PPM) [Eu(μ3-OCO)2(μ2-OCO)] motif as chain which are further linked by the fragments of tbc-ligands and Ag(Ⅰ). Polymer 2 is crystallized in a triclinic fashion having a P1 space group, consisting of 1D mesomeric chains [Eu(μ3-OCO)2] which were further linked by the two different [N-Ag-N] units to form an interesting 2D 4d-4f heterometallic coordination polymer in the ab plane. The solid-state luminescent behaviors of compounds 1 and 2 were investigated at room temperature. CCDC: 1018336, 1; 1024087 2. |
| Keywords: 4-(1H-1,2,4-triazol-1-yl) benzoic acid ligand heterometallic crystal structure |
| 投稿时间：2015-06-01 修订日期：2015-12-04 |
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| 方智利,熊姗,李康宇,俞权锋,徐文媛.两个基于4-(1H-1,2,4-三氮唑)苯甲酸的4d-4f异核配位聚合物的合成、结构及荧光性质[J].无机化学学报,2016,32(2):280-288. |
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