摘要
本文用水热法合成了2个稀土配位聚合物[M(tddc)(NO3)(H2O)4]·2H2O[M=Eu(1),M=Dy(2)],并对它们进行了元素分析、红外光谱、热重等分析,研究了它们的荧光性质,并用X-射线单晶衍射测定了配合物的单晶结构。两者的晶系都属于三斜晶系,P1空间群。荧光实验表明配合物1在常温下具有很强的荧光。
Two lanthanide complexes [M(tddc)(NO3)(H2O)4]·2H2O[M=Eu (1), M=Dy (2)], where tddc^2-=2,3-Dihydrothieno [3,4-b][1,4] dioxine-5,7-dicarboxylic acid anion, have been synthesized and characterized by elemental analysis, IR spectra, thermal analyses, powder X-ray diffraction and single-crystal X-ray analysis. Both the crystals belong to triclinie, space group P1. For complex 1: a=0.802 28 (19) nm, b =0.985 3 (2) nm, c = 1.147 6(3) nm, α=67.107(3)°,β=89.694(4)°, γ=80.428(4)°, V=0.822 3(3) nm^3, Z=2, Mr=550.24, Dc=2.222 g·cm^-3, F(000)=540, the final R=0.0394 and wR=0.094 7 for observed reflections 3 639 with I〉2σ(I). For complex 2:a=0.798 71(10) nm, b=0.983 76(13) nm, c=1.143 93(15) nm, α=67.108 0(10)°,β=89.823(3)°, γ=80.283(2)°, γ=0.814 22(18) nm^3, Z=2, Mr=560.24, Dc=2.291 g·cm^-3, F(000)=536, the final R=0.043 6 and wR=0.114 0 for observed reflections 2 182 with I〉2σ(I). The single crystal structures show that the two complexes are isomorphic and have one-dimensional chains structures and hydrogen bonds result in three-dimensional supramolecular structures. The complex 1 shows intense luminescence in the solid state at room temperature. CCDC: 698267, 1; 698268, 2.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2009年第6期962-967,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.20571039,20721002)
安徽省教育厅自然科学项目(No.KJ2007B013)资助
关键词
晶体结构
稀土配位聚合物
网状结构
荧光
crystal structure
lanthanide complex
network structure
luminescence