摘要
制备了一个新的钴的[Co(C4H3N2CoO2)2(H2O)4](C4H4N2CoO2=4,6-二羟基嘧啶),通过X-射线衍射、热重分析和荧光光谱对配合物的结构和性质进行了测试和表征.晶体结构分析表明,该晶体属于单斜晶系,空间群C2/c,晶胞参数:a=13.528(3),b=7.2240(13),c=13.001(2);α=90°,β=109.448(2)°,γ=90°;V=1198.0(4)3,μ=1.485mm-1,Dc=1.958 Mg/m3,F(000)=724,R=0.0302,wR=0.0894(I>2σ(I)).在配合物的结构单元中,Co原子与两个4,6-二羟基嘧啶和四个水分子配位,形成略有畸变的拉伸八面体配合物.配合物的结构单元[Co(C4H3N2CoO2)2(H2O)4]之间进一步通过分子间氢键和π-π堆积作用相互交叉连接在一起形成三维超分子化合物.
A new coordination compound [Co（C4H3N2CoO2）2（H2O）4]（C4H3N2CoO2= 4,6-dihydroxypyrimidine） has been synthesized,characterized by elemental analysis,infrared spectra,Thermogravimetric analysis,fluorescence spectra,X-ray and diffraction method.Crystal structure data show that the crystal belongs to the monoclinic,space group C2/c,with a = 13.528（3）A,b= 7.2240（13） A,c= 13.001（2）A,α= 90°,β= 109.448（2）°,γ= 90°,V= 1198.0（4）A3,μ= 1.485mm-1,Dc = 1.958 Mg/m^3,F（000） = 724,R= 0.0302,wR = 0.0894（I 2σ（I）） for 3242 observed reflections,with I 2σ（I）.In the complex,Co（II） atom is six-coordinated by two N atoms from two 4,6-dihydroxypyrimidine ligands and four O atoms from four water molecules.A three-dimensional supramolecular structure is formed through hydrogen-bonding and π-π packing interactions.
出处
《洛阳师范学院学报》
2010年第2期49-52,共4页
Journal of Luoyang Normal University
关键词
钴配合物
4
6-二羟基嘧啶
晶体结构
荧光光谱
cobalt complex
4
6-dihydroxypyrimidine
crystal structure
fluorescence spectra
