2-吡啶肼啶缩2-乙酰吡啶铜,锌和镉配合物的晶体结构及荧光性质(英文)

Cu(Ⅱ), Zn(Ⅱ) and Cd(Ⅱ) Complexes with Picolinamide Azine Derived from 2-Acetyl Pyridine and 2-Picolinamide Hydrazone: Crystal Structures and Fluorescence Properties

合成并通过单晶衍射、元素分析、红外光谱表征了配合物[（Cu）（L）（Cl）_2]（1）,[（Zn）（L）（Cl）_2]（2）和{[（Cd）_2（L）（I）_4]}_n（3）的结构（L为2-吡啶肼啶缩2-乙酰吡啶）。单晶衍射结果表明,配合物1和2同构,中心金属分别与来自配体的NNN电子供体以及2个氯离子配位形成一个扭曲的三角双锥结构。在配合物3中,相邻的2个五配位的Cd（Ⅱ）离子通过2个μ2-I-阴离子桥连形成沿c轴方向的一维链。此外还研究了配合物1~3的荧光及热性质。

Three complexes [（Cu）（L）（Cl）_2]（1）, [（Zn）（L）（Cl）_2]（2） and {[（Cd）_2（L）（I）_4]}_n（3）（L is derived from 2-acetyl pyridine and picolinamide hydrazone） have been synthesized and characterized by single-crystal X-ray diffraction,elemental analysis and IR spectroscopy. X-ray diffraction analysis results show that complexes 1 and 2 are isostructural. The coordination geometry of the metal ion in each complex is a distorted trigonal biyramid with three nitrogen atoms from the ligand L and two chloride anions. However, in complex 3, two adjacent fivecoordinated Cd 髤 ion are connected by two bridged μ2-I-anions, resulting in the formation of one-dimensional chain along c axis. In addition, the thermal stability and luminescent properties of the complexes are also studied in detail.