摘要
以2-乙酰基吡啶和p-甲基苯甲醛为起始原料,经过三步反应,合成了一个含有N/O的配位原子的多齿配体2,2′:6′,2″-三联吡啶-4′-苯甲酸(HL).合成该配体的中间体4′-(4-溴-苯基)-[2,2′:6′,2″]三联吡啶(L′)直接和过渡金属反应(原位合成法),通过水热法,得到了两个配合物[Co(L)2]·5H2O(1)和[Ru(L)2]·5H2O(2).晶体结构研究表明,配合物1属于三斜晶系,P-1的空间群,配合物2属于四方晶系,I41/a空间群.在两个配合物中,配体L均采用端基配位模式以三个吡啶N与金属离子螯合成环,而金属离子采用的是六配位模式,与两个配体上六个吡啶N原子配位,形成了一个扭曲的八面体结构,此外还对配体HL的红外光谱、核磁、元素分析以及两个配合物的红外光谱、紫外光谱等进行了分析讨论.
2-Acetyl pyridine and p-Methylbenzaldehyde as raw materials, the ligand 2, 2' : 6', 2'-terpyridine-4'- benzoic acid (HL) was synthesized containing N/O coordination atoms. Direct reactions between the intermediate product 4'- (4- bromo- phenyl) - [2, 2' : 6', 2' ] terpyridine (L') and corresponding metal salts yield two new mononuclear complexes [Co (L)2]·5H20 (1) and [Ru (L)2]· 5H2O (2) by means of hydrothermal method. Complex 1 belongs to the trichnic system with a P-1 space group, and complex 2 belongs to the tetragonal system with a I4 1/a space group. In complexes 1 and 2, every ligand L acts as a terminal ligand with three nitrogen atoms of terpyridyl chelating with metal ions, and every metal ion adopts a distorted octahedral coordination symmetry ligated by two L through mer coordination fashion. Otherwise, infrared spectra and UV spectra of 1 and 2, elemental analysis, infrared spectra and NMR of hgand L were investigated.
出处
《河南科学》
2015年第12期2091-2095,共5页
Henan Science
基金
国家自然科学基金项目(21271157)
河南省科技攻关项目(142102210053)
关键词
三吡啶苯甲酸
配合物
晶体结构
紫外
荧光
terpyridine-benzoicacid
complex: crystal structure: UVspectrum: fluorescence