4-氯苯氧乙酸和1,10-邻菲啰呤构筑的双核铽配合物的晶体结构,荧光和生物活性(英文)

A Terbium Complex Constructed from 4-Chlorophenoxyacetate and 1,10-Phenanthroline with Luminescence and Biological Activity Studies

水热条件下采用Tb(NO3)3·6(H2O),4-氯苯氧乙酸和1,10-邻菲啰呤作为反应物合成出1个双核铽配合物[Tb2(4-Hcpoa)5(phen)2(NO3)](1)(4-Hcpoa=4-氯苯氧乙酸,phen=1,10-邻菲啰呤),并分别用元素分析、红外光谱、差热分析、X-射线粉末衍射和X-射线单晶衍射等表征了该结构。晶体结构分析结果表明:2个双齿和2个三齿4-氯苯氧乙酸配体将2个铽金属离子连接成二聚体结构。荧光分析表明常温固态下配合物1发射绿色荧光,且在544 nm处的荧光寿命为0.920 ms。以除草剂精喹禾灵为对照品,研究了配体4-氯苯氧乙酸及其配合物1对甘蓝型油菜和钝芒稗的抑制作用。

A dinuclear terbium（Ⅲ） complex,[Tb2（4-Hcpoa）5（phen）2（NO3）] （1） （1,4-Hcpoa=4-chlorophenoxyacetate,phen =1,10-phenanthroline）,has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectroscopy,TGA,powder X-ray diffraction and single crystal X-ray diffraction.Structural determination reveals that the Tb3＋ ions are bridged by two bidentate and two terdentate carboxylate groups to give a centrosymmetric dimer with Tb … Tb separations of 0.397 0 （2） nm.Solid-state 1 emits the intensely green photoluminescence with fluorescence lifetime of 0.920 ms （544 nm） at room temperature.The 4-Hcpoa ligand and complex 1 have been screened for their phytogrowth-inhibitory activities against Brassica napus L.and Echinochloa crusgalli L.,and the results are compared with the activity of quizalofop-p-ethyl.CCDC：957432.