摘要
在水溶液中,以邻菲咯啉、丁二酸与硝酸钴为原料合成了一个新的超分子化合物[Co(Phen)2(H2O)2].(HL).(NO3).3H2O,并经元素分析、IR、X射线单晶衍射分析进行了结构表征.结构分析表明,晶体属三斜晶系,P1-空间群,a=0.968 0(2)nm,b=1.370(3)nm,c=1.394 9(3)nm,α=61.714(3)°,β=71.495(4)°,γ=79.575(4)°,V=1.543 7 nm3,Z=2,ρ=1.481 g/cm3,C28H31CoN5O12,Mr=688.51,F(000)=714 andμ=0.627 mm-1,7 754个独立衍射点中,5 428个可观察点满足I≥2σ(I),R1=0.074 5,wR2=0.210 7.晶体中[Co(Phen)2(H2O)2]2+通过π-π相互作用堆积成二维层状结构,层间通过氢键作用构成三维超分子.
The reaction of 1, 10-phenanthroline （ Phen）, succinic acid , Co（ NO3）· 6H2O and NaOH in aqueous solution yields a new supramolecular compound [ Co（Phen） 2 （H2O）2] （HL）NO3· 3H2O （H2 L = succinic acid）. The complex was characterized by elemental analysis, IR, and single-crystal X-ray diffraction analysis. It was crystallized in the triclinic space group P1 with a = 0. 968 0（2） nm, b = 1.370（3） nm, c=1.3949（3） nm, α=61.714（3）°,β=71.495（4）°,γ=79.575（4）°,V=1.543 7 nm^3, Z = 2, /9 = 1.481 g/cm^3, C28 H31CoNsO12, Mr = 688.51, F（000） = 714 and μ = 0. 627 mm^- 1. The final R1 and wR2 are 0. 074 5 and 0. 210 7, respectively, for 5 428 observed reflections with I 〉 2σ（1） out of 7 754 unique reflections. In the crystal structure, [ Co（Phen） 2（H2O） 2]^ 2＋ ions form 2D layers via Л-Л stacking interactions. Between layers, the hydrogen succinate, nitrate anions and the lattice H2O molecules are sandwiched. 2D structure is further attached into a three-dimensional supramolecular framework with channels via hydrogen bond interactions.
出处
《化学研究》
CAS
2005年第3期28-31,共4页
Chemical Research
基金
福建省教育厅科研项目(JB02189)
关键词
钴配合物
超分子
晶体结构
芳环堆积作用
cobalt（Ⅱ） complex
supramolecular framework
crystal structure
Л-Л stacking interaction
