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基于4'-(4-吡啶基)-2,2':6',2″-三联吡啶和1,3,5-苯三甲酸构建的过渡金属配合物的合成和结构表征

Hydrothermal Syntheses and Crystal Structures of Transition Metal Complexes Constructed from 4'-( 4-Pyridyl)-2,2': 6',2″-terpyridine Mixed Ligands and 1,3,5-Benzenetricarboxylic Acid
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摘要 在溶剂热条件下,利用PYTPY与H3BTC配体分别构建了两个新型配位化合物[Ni(HBTC)(PYTPY)(H_2O)_2](1)与[Cr(PYTPY)(Cl)_3]_n·nDMF(2)[PYTPY=4'-(4-吡啶基)-2,2':6',2″-三联吡啶,H_3BTC=1,3,5-苯三甲酸,DMF=N,N-二甲基甲酰胺],并通过元素分析、红外光谱、X射线单晶衍射等分析技术对其结构进行了表征.晶体结构分析表明:化合物(1)属于正交晶系,P2(1)2(1)2(1)空间群;化合物(2)属于单斜晶系,P2(1)/c空间群.化合物(1)表现出一维链结构,化合物(2)表现出零维结构.化合物(1)中的结构单元通过π-π相互作用形成一维的双链结构,一维的链通过π-π相互作用进一步形成二维层状结构,最终拓展形成三维超分子网状结构.此外,两个配合物展示了优良的热稳定性. Two new transition metal complexes,[Ni(HBTC)(PYTPY)(H2O)2](1) and[Cr(PYTPY)(Cl)3]n· nDMF(2)(H3BTC = 1,3,5-benzenetricarboxylic acid,PYTPY = 4'-( 4-pyridyl)-2,2': 6',2″-terpyridine,DMF = N,N-dimethylformamide),have been synthesized and characterized by elemental analysis,IR,UV spectrometer and X-ray single-crystal diffraction. The analysis showed that the crystal structure of compound( 1) belongs to the orthorhombic system,P2( 1) 2( 1) 2( 1) space group; compound( 2) belongs to monoclinic system,space group P2( 1)/c. Complexes( 1) feature one-dimensional chain structures,and the complex( 2) exhibits zero-dimensional structure. Compound( 1) structure unit present double chain structure via π-π stacking interactions,one-dimensional chain to form two-dimensional layer structure via π-π stacking interaction,and eventually expand to form three-dimensional( 3 D) supramolecular framework. In addition,two complexes showed excellent thermal stability.
出处 《吉林师范大学学报(自然科学版)》 2017年第4期13-19,共7页 Journal of Jilin Normal University:Natural Science Edition
基金 国家自然科学基金项目(21576112) 吉林省科技发展计划项目(20150623024TC-19 20160520131JH) 四平市科技发展计划项目(2015049)
关键词 过渡金属配合物 4’-(4-吡啶基)-2 2’:6’ 2”-三联吡啶 1 3 5-苯三甲酸 晶体结构 transition metal complex, 4′( 4Pyridyl)2, 2′: 6′, 2″terpyridine, 1, 3, 5benzenetricarboxylicacid,crystal structure
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