College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, 471022, P. R. China.
Dalton Trans. 2010 Mar 7;39(9):2301-8. doi: 10.1039/b920308g. Epub 2010 Jan 12.
Hydrothermal reactions of mixed ligands 5-methoxyisophthalate (CH(3)O-H(2)ip) and dipyridyl with Cu(OAc)(2).2H(2)O afford five new coordination polymers, including {[Cu(CH(3)O-ip)(bpa)].H(2)O}(n) (1), Cu(2)(CH(3)O-ip)(2)(bpa)(0.5)(H(2)O) (2), Cu(2)(CH(3)O-ip)(2)(bpp)(H(2)O) (3), {[Cu(3)(CH(3)O-ip)(3)(bpp)(2)(H(2)O)].3H(2)O}(n) (4) and Cu(4)(CH(3)O-ip)(3)(bpe)(OH)(2) (5) (bpp = 1,3-di(4-pyridyl)propane, bpa = 1,2-bi(4-pyridyl)ethane, and bpe = 1,2-di(4-pyridyl)ethylene). Compound 1 consists of CH(3)O-ip anion-bridged 1D Cu(II) chains that are linked by trans-bpa into a 2D layer. Compound 2 is a 2D (4,4) layer that is connected by CH(3)O-ip anions. The gauche bpa in 2 lies in the cavity and meets the coordination requirement of the paddle-wheel dimeric copper unit. Compound 3 is an extended 3D polythreading network consisting of 2D (4,4) motifs with dangling bpp lateral arms. Compound 4 exhibits a 3D (4,6)-connected self-penetrating (6(5).8)(6(14).8) network that is composed of binuclear and mononuclear metal nodes. Compound 5 exhibits a 3D network with the tetranuclear Cu(4)(mu(3)-OH)(2) cluster acting as nodes, which is constructed by the interconnection of 2D helical layers via bpe pillars. The results of magnetic determination show that the syn-anti carboxylato bridges in our cases induce a weak antiferromagnetic interaction in 1, and the syn-syn carboxylato bridge in 3 and 4 mediates a strong antiferromagnetic interaction.
水热反应混合配体 5-甲氧基间苯二甲酸（CH(3)O-H(2)ip）和联吡啶与 Cu(OAc)(2).2H(2)O 提供了五个新的配位聚合物，包括{[Cu(CH(3)O-ip)(bpa)].H(2)O}(n)（1），Cu(2)(CH(3)O-ip)(2)(bpa)(0.5)(H(2)O)（2），Cu(2)(CH(3)O-ip)(2)(bpp)(H(2)O)（3），{[Cu(3)(CH(3)O-ip)(3)(bpp)(2)(H(2)O)].3H(2)O}(n)（4）和Cu(4)(CH(3)O-ip)(3)(bpe)(OH)(2)（5）（bpp = 1,3-二（4-吡啶基）丙烷，bpa = 1,2-双（4-吡啶基）乙烷，bpe = 1,2-二（4-吡啶基）乙烯）。化合物 1 由 CH(3)O-ip 阴离子桥接的 1D Cu(II)链组成，这些链通过反式-bpa 连接成二维层。化合物 2 是一个二维（4,4）层，由 CH(3)O-ip 阴离子连接。2 中的 gauche bpa 位于空腔中，并满足桨轮二聚体铜单元的配位要求。化合物 3 是一个扩展的 3D 多线程网络，由具有悬垂 bpp 侧臂的二维（4,4）图案组成。化合物 4 表现出一个 3D（4,6）连接的自贯穿（6(5).8）（6(14).8）网络，由双核和单核金属节点组成。化合物 5 表现出一个 3D 网络，其中四核Cu(4)(mu(3)-OH)(2)簇作为节点，通过二维螺旋层之间的互连接构筑而成，通过 bpe 支柱。磁性测定结果表明，我们案例中的顺-反羧酸桥在 1 中诱导了弱反铁磁相互作用，而 3 和 4 中的顺-顺羧酸桥介导了强反铁磁相互作用。
