Self-assembly of metal–organic frameworks based on N-donor ligand and flexible tricarboxylic acids with different angular characters
作者:Lei Chen、Li Zhang、Shun-Li Li、Yong-Qing Qiu、Kui-Zhan Shao、Xin-Long Wang、Zhong-Min Su
DOI:10.1039/c3ce40910d
日期:——
Five metal–organic frameworks (MOFs), namely, [Zn2(L1)(BIMB)(μ2-OH)] (1), [Zn3(L1)2(BIMB)3]·4H2O (2), [Zn(HL2)(BIMB)0.5]·H2O (3), [Zn3(L2)2(BIMB)3]·8H2O (4) and [Zn3(L2)2(BIMB)3]·4H2O (5) (H3L1 = 5-(3-carboxybenzyloxy)isophthalic acid, H3L2 = 5-(4-carboxybenzyloxy)isophthalic acid and BIMB = 1,4-di(1H-imidazol-1-yl)benzene), have been synthesized under hydrothermal conditions. Their structures have
五个金属-有机骨架(MOF),即,[锌2(L 1)(BIMB)(μ 2 -OH)](1),[锌3(L 1)2(BIMB)3 ]·4H 2 O(2),[Zn(HL 2)(BIMB)0.5 ]·H 2 O(3),[Zn 3(L 2)2(BIMB)3 ]·8H 2 O(4)和[Zn 3(L 2)2(BIMB)3 ]·4H 2 O(5)(H 3 L 1 = 5-(3-羧基苄氧基)间苯二甲酸,H 3 L 2 = 5-(4-羧基苄氧基)间苯二甲酸和BIMB = 1,4-二(1 H-咪唑-1-基)苯),已在水热条件下合成。它们的结构已通过单晶X射线衍射分析确定,并通过元素分析,IR光谱和热重(TG)分析进一步表征。复合体1是通过(3,4)连接的3D互锁多联框架,具有通过2D并行互穿的(6 3)(6 6)拓扑结构。复合体2采用具有(6·8 2)(4·6·8)(6·8 4 ·9)(4·6 2 ·8 2 ·1