摘要
用皮考林酸和六水合氯化镍反应制备了一种三维氢键超分子配合物,经X射线衍射分析确定了单晶结构.该晶体属单斜晶系,P21/m空间群,晶胞参数为:a=0.976 0(2)nm,b=0.522 54(10)nm,c=1.450 1(3)nm,Mr=374.98,α=90.08(3)°,β=90.08(3)°,γ=90°,V=0.739 63(3)nm3,Z=2,ρ=1.684 g/cm3,F(000)=388,μ=1.357 mm-1,R=0.039 0,wR=0.090 8.共收集2 656个衍射数据,其中1 569个为独立衍射点(Rint=0.033 2),可观测点数1 382个(I>2σ(I)).结果表明,在组成该超分子体系的基本结构单元[N i(C6H4O2N)2.(H2O)4]中,N i(Ⅱ)离子形成六配位的稍拉长的八面体构型,配合物单元之间通过氢键相互连接,形成了无限延伸的具有网状结构的三维超分子体系.
A supermolecular compound was synthesized with picoloy acid and NiCl2·6H2O. Its structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic system with P21/ m space group. The cell parameters are: a =0 . 976 0(2) nm, b =0.522 54(10) nm, c = 1. 450 1(3) nm , Mr =374.98, α=β =90.08(3) °, γ=90°, V=0 . 739 63(3) nm^3, Z =2, ρ = 1. 684 g,/cm^3, F (000) =388, μ= 1.357 mm^-1, R =0.390, wR =0.090 8. The crystal consists of [Ni(C6H4O2N)2·(H2O) 4] units in which the Ni( Ⅱ ) ion is located in a slightly distorted octahedral center . Each units is connected by hydrogen bonds to form a three-dimensional network structure.
出处
《化学研究》
CAS
2005年第3期20-23,共4页
Chemical Research
关键词
皮考林酸
镍(Ⅱ)
配合物
晶体结构
超分子
picoloy acid
nickel( Ⅱ )
complex
crystal structure
supermolecule