通过调变溶剂热的反应条件,我们合成了3种Ni(Ⅱ)基的配位聚合物(CPs)[Ni(CH3-BDC)(3-TBT)(H2O)2]·EtOH·2H2O(CP1)、[Ni3(CH3-BDC)3(3-TBT)2(H2O)5]·2DMF·2H2O(CP2)和[Ni3(CH3-BDC)3(3-TBT)2(H2O)6]·2DMF·4H2O(CP3),其中 CH3-H2BDC=5-methyl isophthalic acid,3-TBT=2,4,6-tris(3-pyridyl)-1,3,5-benzene.X射线单晶衍射分析表明,3个CPs都是由相似的 Ni2(CH3-BDC)2的双核单元构建的,并分别呈现出从零维(0D)、2D到3D结构的网络骨架.反应条件的微小调变,导致了不同结构的配位聚合物.同时,催化实验表明,3在无溶剂的温和反应条件下,CP3对苄醇及其衍生物与苯胺的氧化-偶联反应表现出极好的催化活性和循环稳定性.
By tuning the solvothermal reaction conditions,we prepared three Ni(Ⅱ)-based coordination polymers(CPs),namely[Ni(CH3-BDC)(3-TBT)(H2O)2]·EtOH·2H2O(CP1),[Ni3(CH3-BDC)3(3-TBT)2(H2O)5]·2DMF·2H2O(CP2),and[Ni3(CH3-BDC)3(3-TBT)2(H2O)6]·2DMF·4H2O(CP3),where CH3-H2BDC=5-methyl isophthalic acid,3-TBT=2,4,6-tris(3-pyridyl)-1,3,5-benzene.X-ray single crystal diffraction analyses reveal that three CPs are constructed from similar Ni2(CH3-BDC)2 binuclear units and exhibited different zero-dimensional(0D),2D,and 3D networks,respec-tively.Meanwhile,the catalytic experiments show that CP3 exhibits the best catalytic activities and cycle stability for the oxidative coupling reaction of benzyl alcohol and its derivatives with aniline under solvent-free conditions.CCDC:2168727,CP1;2168728,CP2,2222864,CP3.