基于3,3′,4,4′-四羧基偶氮苯构筑的三个金属配合物的合成、晶体结构及性质（英文）

Syntheses,Crystal Structures and Properties of Three Metal Complexes Based on 3,3′,4,4′-Tetracarboxyazobenzene

在水热条件下利用H4ddb配体合成了3个过渡金属配合物[Co_2(ddb)(phen)_2(H_2O)_6]·3H_2O (1),[Co(ddb)_(0.5)(bpy)_(0.5)(H_2O)_3]_n(2)和{[Ag(dpe)]·0.5(H2ddb)·H2O}n(3)(H4ddb=3,3′,4,4′-四羧基偶氮苯,bpy=4,4′-联吡啶,dpe=1,2-二(4-吡啶基乙烯)),并用元素分析、红外光谱、X射线粉末衍射、X射线单晶衍射对其进行了表征。配合物1为双核结构,基于丰富的氢键作用扩展形成三维超分子网结构。配合物2为基于钴离子通过ddb4-配体以μ4∶η1,η1,η1,η1的配位模式连接而成的二维网结构。配合物3是由Ag(Ⅰ)离子与dpe配体形成的直链结构,客体分子H2ddb2-通过氢键作用将其扩展为三维超分子结构。此外还研究了配合物1～3的荧光性质和热稳定性。

Three transition metal complexes based on H4ddb ligand, namely[Co2（ddb）（phen）2（H2O）6]·3H2O （1）,[Co（ddb）0.5（bpy）0.5（H2O）3]n （2） and {[Ag（dpe）]·0.5（H2ddb）·H2O}n （3）. （H4ddb=3,3＇,4,4＇-tetracarboxyazobenzene, bpy=4,4＇-pyridine, dpe=1,2-di（4-pyridyl） ethylene） have been synthesized and structurally characterized by elemental anal-yses, IR spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analyses. Complex 1 is binuclear structure, which is linked into 3D supramolecular network through rich hydrogen bonding interactions. Complex 2 shows 2D network constructed from Co2＋ ion cross-linked by ddb4- ligands via μ4：η1,η1,η1,η1 coordina-tion mode. Complex 3 is linear chain structure based on Ag（Ⅰ） ion and dpe ligands. Interestingly, the guest molecule H2ddb2- extends a 3D supramolecular structure of 3 through intermolecular hydrogen bonding interactions. In addition, the thermal stabilities and luminescence properties of 1-3 were also studied.