混价铜Schiff碱配合物同质多晶体的合成与结构表征  

Syntheses and Structural Characterization of Two Mixed-valence Cu^ⅠCu^Ⅱ Pseudo-polymorphs

作　　者：倪文秀[1] 

机构地区：[1]汕头大学医学院,广东汕头515041

出　　处：《汕头大学学报（自然科学版）》2015年第3期65-75,共11页Journal of Shantou University：Natural Science Edition

基　　金：国家自然科学基金(21401125);博士后科学基金第六批特别资助(2013T60811);汕头大学医学院科研启动基金

摘　　要：本文合成了含N、O配位原子的吡啶基多齿异烟肼Schiff碱配体(2-pyridylcarbaldehyde isonicotinoyl hydrazone,L1).通过分层法,以L1作为配体与Cu I在不同的溶剂条件下合成出含不同溶剂分子的超分子异构体配合物[Cu2(L1)2I·5H2O](1)和[Cu2(L1)2I·2DMF](2),利用元素分析、红外光谱及单晶衍射结果对几种配合物的组成和晶体结构进行了研究.单晶结果表明在配合物1和2中,为了满足分子中电荷的平衡金属铜原子均以混价CuⅠCuⅡ的形式存在.在配合物1和2中发现溶剂分子的形状和大小对于配合物异构体结构的生成有着重要的影响,起着模板的作用.本文还通过热重分析研究探讨了这两种互为异构体配合物的热稳定性的差异.Two 1D mixed-valence Cu^ⅠCu^Ⅱ pseudo-polymorphs： [Cu2（L1 ）2 I· 5H2O ], 1） and [Cu2 （L1）2 I ·2DMF], 2） were prepared by layering method with the reaction of 2- pyridylcarbaldehyde isonicotinoyl hydrazone （L1） and CuI using different solvents. Their crystal structures were determined by single-crystal X-ray diffraction and the differences between their thermodynamic properties were studied through thermogravimetric analyses. The effects of solvent molecules on the structures of complexes have been discussed, and found that the guest solvent molecules serve as highly selective templates during the assembly of these host frameworks through steric effects.

关 键 词：铜配合物 席夫碱 同质多晶 

分 类 号：O614[理学—无机化学]