2,3-吡啶二羧酸基铜—稀土配位聚合物的水热合成与电化学性质研究
发布时间：2018-07-31 19:05
【摘要】：本论文选用铜离子和稀土离子为中心金属,2,3-吡啶二羧酸(2,3-H_2pydc)为主配体,N,N′-双(4H-1,2,4-三唑)己酰胺(dth)和N,N′-双(4H-1,2,4-三唑)环己酰胺(dtcd)为辅助配体,在水热条件下合成了15个配位聚合物[LnCu(2,3-pydc)2(adi)0.5(H_2O)3]·2H_2O[Ln=La(1),Pr(2),Nd(3),H_2adi=己二酸],[Ln2Cu3(2,3-pydc)6(H_2O)10]·8H_2O[Ln=Sm(4),Eu(5),Gd(6),Tb(7),Dy(8),Er(9),Yb(10),Lu(11)]、[Ln2Cu3(2,3-pydc)6(H_2O)6]·xH_2O[Ln=La(12,x=8),Nd(14,x=10)]和[Ln2Cu2(2,3-pydc)4(NO3)(OH)(H_2O)6]·2H_2O[Ln=La(13),Nd(15)]。通过X-射线单晶衍射、元素分析、红外、X-射线粉末衍射和热重分析对上述配位聚合物进行表征,并对其进行电化学性质研究。配位聚合物1 11显示两种具有不同拓扑的三维(3D)结构。adi阴离子源于dth的原位水解。在配位聚合物1-3中,双核Cu2(2,3-pydc)4和Ln2(COO)2单元相互连接形成二维(2D)层,adi阴离子连接相邻的二维层形成三维骨架。在配位聚合物4-11中,三核Cu3(2,3-pydc)6单元规则排列形成二维超分子层,稀土离子连接二维超分子层形成三维骨架。配位聚合物12-15显示了具有不同拓扑的两种三维结构。在12和14中,Cu(2,3-pydc)2和Ln2(COO)4单元彼此连接形成二维层,相邻的二维层被Cu(2,3-pydc)4单元连接形成具有一维(1D)孔道的三维框架。在13和15中,LnIII离子桥连基于2,3-pydc和CuII的一维链形成二维层,硝酸根和羟基阴离子连接相邻的二维层产生具有一维孔道的三维框架。
[Abstract]:In this paper, copper ion and rare earth ions were selected as the central metal, 2H2pyridine dicarboxylic acid (2H2pydc) as the main ligands, and the main ligands, NNN- (4H-1- (4H-1-, 2-) -triazole-4-triazole) hexanilamide (dth), and NN- (4H-1- (4H-1-) -triazole-4-triazole) cyclohexanamide (dtcd), were used as the auxiliary ligands. 鍦ㄦ按鐑潯浠朵笅鍚堟垚浜，
本文编号：2156545
[Abstract]:In this paper, copper ion and rare earth ions were selected as the central metal, 2H2pyridine dicarboxylic acid (2H2pydc) as the main ligands, and the main ligands, NNN- (4H-1- (4H-1-, 2-) -triazole-4-triazole) hexanilamide (dth), and NN- (4H-1- (4H-1-) -triazole-4-triazole) cyclohexanamide (dtcd), were used as the auxiliary ligands. 鍦ㄦ按鐑潯浠朵笅鍚堟垚浜，
本文编号：2156545
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