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柔性配体构筑的三个构象多样的镧系羧酸配位聚合物:合成,结构和荧光性质
引用本文:崔培培,崔论峰,符爱云.柔性配体构筑的三个构象多样的镧系羧酸配位聚合物:合成,结构和荧光性质[J].无机化学学报,2013,29(18).
作者姓名:崔培培  崔论峰  符爱云
作者单位:德州学院生命科学学院, 德州 253023,潍坊市朱里中学, 潍坊 261111,德州学院生命科学学院, 德州 253023
基金项目:国家自然科学基金(No.21171031)资助项目。
摘    要:利用2,2''-(1,4-亚苯基)二(亚苯基)二(硫基)苯二羧酸(H2L1)和2,2''-(2,3,5,6-四甲基-1,4-亚苯基)二(亚甲基)二(硫基)苯二甲酸(H2L2)2个柔性二羧酸分别与镧系金属盐反应,通过溶剂热方法合成了3个配位聚合物:{(NH2(CH3)2]Nd(L1)2(DMF)]·2DMF}n(1)和{Ln(L2)1.5(H2O)(DMF)2]·2DMF}nLn=Ce(2),Pr(3)]。利用元素分析、红外、粉末X射线衍射、热重分析等对配合物进行了表征。X射线单晶衍射分析表明:3个配合物均为二维的层状结构,并且2个配体在配合物中表现出不同的构象。(L1)2-在配合物1中表现出顺式和反式2种构象,(L22)2-在配合物23中仅表现出反式构象。此外,对配合物的热稳定性和荧光性质也进行了研究。

关 键 词:配位聚合物  柔性配体  构象  荧光性质

Three Lanthanide-Carboxylate Coordination Polymers with Conformation Variation Based on Flexible Ligands: Syntheses, Structures and Photoluminescence Properties
CUI Pei-Pei,CUI Lun-Feng and FU Ai-Yun.Three Lanthanide-Carboxylate Coordination Polymers with Conformation Variation Based on Flexible Ligands: Syntheses, Structures and Photoluminescence Properties[J].Chinese Journal of Inorganic Chemistry,2013,29(18).
Authors:CUI Pei-Pei  CUI Lun-Feng and FU Ai-Yun
Institution:College of Life Science, Dezhou University, Dezhou, Shandong 253023, China,Zhuli Middle School, Weifang, Shandong 261111, China and College of Life Science, Dezhou University, Dezhou, Shandong 253023, China
Abstract:Reactions of flexible dicarboxylate ligands 2,2-(1,4-phenylenebis(methylene))bis(sulfanediyl)dibenzoic acid (H2L1) and 2,2-(2,3,5,6-tetramethyl-1,4-phenylene)bis(methylene)bis(sulfanediyl) dibenzoic acid (H2L2) with lanthanide metal salts under solvothermal conditions give rise to three lanthanide-organic coordination polymers (CPs), namely, {(NH2(CH3)2]Nd(L1)2(DMF)]·2DMF}n(1) and {Ln(L2)1.5(H2O)(DMF)2]·2DMF}nLn=Ce(2),Pr(3)] (DMF=N,N-dimethylformamide). All of the complexes have been structurally characterized by single-crystal X-ray diffraction analyses and characterized by elemental analysis, infrared spectra (IR), powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). All the complexes have two-dimensional (2D) layer structures, which can be simplified as (4,4) net. The ligands display different conformation. (L1)2- in complex 1 exhibits two kinds of conformations: syn- and anti-conformation, while (L2)2- in complexes 2 and 3 exhibits anti-conformation. Furthermore, the thermal stabilities and photoluminescence properties of the complexes were investigated.
Keywords:coordination polymers  flexible ligand  conformation  photoluminescence property
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