摘要
室温下,AgNO3、4,4′-联吡啶(bpy)/1,2-二(4-吡啶基)乙烯(dpe)与联苯二甲酸(H2da)在乙酸/乙醇水溶液中反应数周后分别得到块状晶体[Ag2(bpy)2(Hda)2](HAc)2.2H2O(1)和[Ag2(dpe)2(da)]·4H2O(2)。上述两种晶体均包含无限扩展的一维阳离子链[AgL]∞(L=bpy和dpe),而穿插其中的有机阴离子da2-起到了平衡电荷的作用。结晶水分布于离子链之间并形成氢键,对晶体堆积起到了定位作用。UV/Vis/NIR漫反射光谱测定结果表明化合物1和2的光学能隙Eg均约为3.3 eV。
The reaction of AgNO3,4,4′-bipyridine（bpy）/flexible 1,2-di（4-pyridyl）ethylene（dpe）,diphenic acid（H2da） in acetic acid/alcohol aqueous solution produces,respectively,block-like crystals of [Ag2（bpy）2（Hda）2]（HAc）2 ·2H2O（1）,and [Ag2（dpe）2（da）]·4H2O（2） at room temperature.Both the above-stated compounds consist of parallel 1D infinite cationic chains,∞（L=bpy and dpe）,interspersed with organic da2-anions which play the role of charge compensation in the crystal structure.The lattice water molecules are situated among these chains,and stabilized by rich hydrogen-bonding interactions,playing a role in the orientation of the da^2- in the crystal packing.Optical absorption properties and band gaps of title compounds were determined with UV/Vis/NIR diffuse reflectance spectra,and the results show that the Eg can be assessed at 3.3 eV for both compound 1 and 2.CCDC：768737,1;768736,2.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2011年第2期361-366,共6页
Chinese Journal of Inorganic Chemistry
基金
北京市属高等学校人才强教计划项目(No.PHR201008372和PHR201106124)
北京建筑工程学院科研基金(No.100902602)资助
关键词
配位聚合物
联苯二甲酸
类联吡啶
晶体结构
光学性能
coordination polymer
diphenic acid
bipyridine-like ligand
crystal structure
optical properties
