多吡啶配合物[Zn(4,4′-bpy)(CH_3COO)(NO_3)]_n和[Y(bpy)_2](NO_3)_3的合成、表征和晶体结构

Preparation, Characterization and Crystal Structure of Polypyridine Coordinated Complexes [Zn(4,4′-bpy)(CH_3COO)(NO_3)]_n and [Y(bpy)_2](NO_3)_3

通过自组装制得 [Zn(4,4′- bpy) (CH3COO) (NO3) ]n(配合物 1)和 [Y(bpy) 2 ](NO3) 3(配合物 2 ) .其中 ,4 ,4′-bpy为 4 ,4′-联吡啶 ,bpy为 2 ,2′-联吡啶 .对配合物进行了 X-射线衍射结构表征 .配合物 1是聚合物 ,锌离子为 6配位 ,4 ,4′-联吡啶作为双齿桥联配体使配合物呈线性一维链 ,而醋酸根作为双齿桥联配体和链间的 π- π堆积作用 ,又使配合物形成一维网状的结构 .配合物 2中 Y( )是 10配位 ,2个 2 ,2′-联吡啶各提供 2个氮原子 ,3个硝酸根各提供 2个氧原子参与配位 .

Zn(4,4′-bpy)(CH 3COO)(NO 3)] n(complex 1) and [Y(bpy) 2](NO 3) 3 (complex 2) are prepared by self-assembled. Their structures are determined by single-crystal X-ray diffraction. Complex 1 is coordinated polymer and Zn(Ⅱ) ion is a six-coordination. Complex 1 contains 1-D infinite polymeric chains that are formed through 4,4′-bipyridine bridging Zn(Ⅱ) ions. Acetate coordinates to Zn(Ⅱ) as a bi-dentate ligand and there is a π-π stacking effect.The molecular structure is extended into one-dimensional network.Each Y(Ⅲ) ion in complex 2 is ten coordinated by four nitrogeon atoms from two 2,2′-bipyridines and six oxygen atoms from three nitrated groups.