摘要
通过溶剂热合成了一个新的由2-羟基-6-甲基-异烟酸和草酸混合配体构筑的镝有机框架化合物,化学式为{[Dy(μ2-H2minca)(μ2-C2O4)·2H2O]·H2O}n,(其中,H3minca代表2-羟基-6-甲基-异烟酸).标题化合物呈现复杂的二维(2D)瓦楞状网络63拓扑结构,其中{DyO8}多面体是通过苯羧酸上的羧基和草酸联成片状结构.光致发光研究表明,标题化合物在可见光区域发射出Dy的特征f-f跃迁荧光光谱.热重和差热分析表明,该化合物具有较高的热稳定性.变温磁化率测量表明,相邻镝(Ⅲ)中心之间有可能存在弱的铁磁相互作用.
A new lanthanide-organic framework incorporating both substituted isonicotinic acid and oxalate coligand has been obtained through solvo-thermal reaction,namely,{[Dy（μ2-H 2 minca）（μ2-C2 O 4 ）·2 H 2 O]·H 2 O}n ,（H 3 minca = 2-hydroxyl-6-methyl-isonicotinic acid）.The title complex exhibits two dimensional （2D）corrugated networks with 6 3 topology,in which{DyO 8 }polyhedron are linked through carboxylate and oxalate into a wavelike sheet.The lumi-nescence measurement shows that the title complex exhibits characteristic f-f transition emis-sion in visible region.Thermogravimetric and differential thermal analysis measurement indi-cates that the title complex displays high thermal stability.Variable-temperature magnetic sus-ceptibility measurements indicate that there may exist ferromagnetic magnetic interactions be-tween adjacent Dy （III）centers.
出处
《化学研究》
CAS
2014年第5期466-473,共8页
Chemical Research
基金
National Natural Science Foundation of China(21273101)
Foundation Program for Science & Technology Innovation Talents in Universities of Henan Province(2014HASTIT014)
Tackle Key Problem of Science and Technology Project of Henan Province(142102310483)
Program for Backbone Teachers in Universities of Henan Province(2012GGJS158)
