摘要
8-羟基喹啉(8-HQ)与Ag2O在乙腈/水混合溶剂中反应可获得银-8-羟基喹啉配合物(Ag(8-HQ)2).X-射线单晶衍射分析表明,配合物晶体属正交晶系P212121空间群,分子式为C18H13AgN2O2,Mr=397.17.其晶体学参数:a=0.724 25(1)nm,b=1.049 70(2)nm,c=1.895 12(3)nm,Z=4,Dc=1.831g·cm-3,R=0.036 6,Rw=0.097 8,拟合优度(GOF)为1.068.在其晶体结构中,每个Ag与两个8-HQ配体螯合构成畸变平面四方构型,通过分子间氢键和π-π堆积作用组成并行的一维超分子孪生链结构.固相和溶液相的配合物可分别于522nm和425nm处观察到荧光发射.
A new silver-8-hydroxyquinoline complex, Ag（8-HQ）z （8-HQ=8-hydroxyquinoline）, is prepared from the solution reaction of 8-hydroxyquinoline and Ag20 in a mixed media of acetonitrile/water. X-ray single crystal analysis re- veals that complex crystallizes in orthorhombic, space group P21 21 21 with a=0. 724 25（1） nm, b= 1. 049 70（2） nm, c= 1. 895 12（3） nm, Z=4, Dc=1. 831 g · cm-3, R=0. 036 6, Rw=0. 097 8 and GOF （good-of-fit） =1. 068. The molecular formula of the complex is C18 Hi3 AgNz Oz. In the crystal structure of this complex, each Ag center is chelated by two 8- HQ ligands to generate a distorted parallelogram conformation, and a 1D simple parallel twin-chain-like supramolecular array is constructed by the intermocular hydrogen bond and the aromatic π-π stacking interaction. A green fluorescent e- mission at 522 nm for solid state and a fluorescent emission at 425 nm for solution phase are observed in this complex, re- spectively.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2013年第6期649-654,共6页
Journal of Huaqiao University(Natural Science)
基金
国家自然科学基金资助项目(50971063)
福建省自然科学基金资助项目(2010J01042)
关键词
8-羟基喹啉
配合物
晶体结构
荧光性质
8-hydroxyquinoline
complex
crystal structure
fluorescence property
