摘要
利用3-(2-吡啶基)-1,2,4-三唑配体(HL)和不同的金属盐设计合成了5个配合物[Co(HL)_2(H_2O)_2](NO_3)_2(1)、[Cu_2(L)_2(NO_3)_2(H_2O)_4](2)、 [Cu_2(L)_2(AcO)_2(H_2O)_2]·6H_2O(3)、[Cu_2(L)_2(HL)_2(ClO_4)_2]·2CH_3CN(4)和[Cd_2(L)_2(HL)_2(NO_3)_2]·2H_2O(5),并通过X射线单晶衍射、红外、元素分析、X射线粉末衍射和热重对配合物结构进行了表征。测试结果表明配合物1具有单核结构,并且可以通过氢键的相互作用形成二维超分子结构。配合物2~5为双核结构。配合物2和5可以通过氢键的相互作用形成二维超分子结构。配合物3通过氢键的相互作用形成三维超分子结构。研究了配合物中HL配体的配位模式。此外,研究了配体HL和配合物1和5的固态荧光性质及荧光寿命。
Five complexes [Co(HL)2(H2O)2](NO3)2 (1), [Cu2(L)2(NO3)2(H20)4] (2), [Cuz(L)2(AcO):(H:O)2]-6H20 (3), [Cu2(L)2(HL)2(C104)2] .2CH3CN (4) and [Cd2(L)2(HL)2(N03)2] ·2H20 (5) utilizing 3-(2-pyridyl)-l,2,4-triazole ligand (HL) as well as different metal salts have been synthesized and structurally characterized by single crystal X-ray diffraction, infrared spectroscopy (IR), elemental analysis, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). The structural analyses reveal that complex 1 has a mononuclear structure and forms a 2D supramolecular structure via hydrogen bonding interactions. Complexes 2-5 have dinuclear structures. Complexes 2 and 5 are arranged into 2D supramolecular structurs by the corresponding hydrogen bonding interactions, and complex 3 is also arranged into a 3D supramolecular structure through hydrogen bonding interactions. The coordination modes of HL ligand in the complexes were studied. Moreover, the fluorescent properties and fluorescence lifetimes of ligand HL, complexes 1 and 5 were investigated in the solid at room temperature.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2017年第9期1685-1696,共12页
Chinese Journal of Inorganic Chemistry
基金
新疆维吾尔自治区自然科学基金(No.2015211C266)资助项目
关键词
配合物
晶体结构
荧光性质
complex
crystal structure
luminescent property