2,3-吡啶二羧酸基銅—稀土配位聚合物的水熱合成與電化學(xué)性質(zhì)研究
發(fā)布時(shí)間:2018-07-31 19:05
【摘要】:本論文選用銅離子和稀土離子為中心金屬,2,3-吡啶二羧酸(2,3-H_2pydc)為主配體,N,N′-雙(4H-1,2,4-三唑)己酰胺(dth)和N,N′-雙(4H-1,2,4-三唑)環(huán)己酰胺(dtcd)為輔助配體,在水熱條件下合成了15個(gè)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)]。通過(guò)X-射線單晶衍射、元素分析、紅外、X-射線粉末衍射和熱重分析對(duì)上述配位聚合物進(jìn)行表征,并對(duì)其進(jìn)行電化學(xué)性質(zhì)研究。配位聚合物1 11顯示兩種具有不同拓?fù)涞娜S(3D)結(jié)構(gòu)。adi陰離子源于dth的原位水解。在配位聚合物1-3中,雙核Cu2(2,3-pydc)4和Ln2(COO)2單元相互連接形成二維(2D)層,adi陰離子連接相鄰的二維層形成三維骨架。在配位聚合物4-11中,三核Cu3(2,3-pydc)6單元規(guī)則排列形成二維超分子層,稀土離子連接二維超分子層形成三維骨架。配位聚合物12-15顯示了具有不同拓?fù)涞膬煞N三維結(jié)構(gòu)。在12和14中,Cu(2,3-pydc)2和Ln2(COO)4單元彼此連接形成二維層,相鄰的二維層被Cu(2,3-pydc)4單元連接形成具有一維(1D)孔道的三維框架。在13和15中,LnIII離子橋連基于2,3-pydc和CuII的一維鏈形成二維層,硝酸根和羥基陰離子連接相鄰的二維層產(chǎn)生具有一維孔道的三維框架。
[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,
本文編號(hào):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,
本文編號(hào):2156545
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