Engineering the structure and magnetic properties of crystalline solids via the metal-directed self-assembly of a versatile molecular building unit
Engineering the structure and magnetic properties of crystalline solids via the metal-directed self-assembly of a versatile molecular building unit
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DOI：
10.1021/ja0200241
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发表时间：
2002-06-12
影响因子：
15
通讯作者：
Stang, PJ
中科院分区：
文献类型：
--
作者：
Noveron, JC;Lah, MS;Stang, PJ
本文报道了N-（4-吡啶基）苯甲酰胺（NPBA）的几种金属配合物的超分子化学，通式为[M-a（NPBA）（2）A（B）S（c）]，其中M = Co ~（2+），Ni ~（2+），Zn ~（2+），Mn ~（2+），Cu ~（2+），Ag ~+; A = NO_3-，OAc-; S = MeOH，H_2O; a = 0，1，2; B = 0，1，2，4; c = 0，2. NPBA包含可以参与三种分子间相互作用模式的结构特征：（1）金属-配体配位，（2）氢键，和（3）π-π堆积。NPBA形成由氢键控制的一维（1-D）链，但当与金属离子反应时，它产生各种各样的超分子支架，这些支架控制周期性纳米结构的排列，并在晶体中形成1-（2-4），2-（5）或3-D（6-10）氢键和π-π堆积相互作用的固态网络。同构7-9表现出2-D氢键网络，其促进其同构家族的单晶的拓扑生长并产生具有两种（11）和三种（12）不同组分的晶体复合物。此外，7-9还可以形成结晶固溶体（M，M '）（NPBA）2（NO3）（2）（MeOH）（2）（M，M' = Co 2+、Ni 2+或Zn 2+，13-16），其中Co 2+、Ni 2+和Zn 2+的混合物以不同比例共享相同的晶格，以允许形成具有调制磁矩的材料。最后，我们报告了多维非共价网络对1 -D（4），2-D（5）和3-D（7，8，10和13-16）顺磁网络在2和300 K之间磁矩的影响。
We report the supramolecular chemistry of several metal complexes of N-(4-pyridyl)benzamide (NPBA) with the general formula [M-a(NPBA)(2)A(b)S(c)], where M = Co2+, Ni2+, Zn2+, Mn2+, Cu2+, Ag+; A = NO3-, OAc-; S = MeOH, H2O; a = 0, 1, 2; b = 0, 1, 2, 4; and c = 0, 2. NPBA contains structural features that can engage in three modes of intermolecular interactions: (1) metal-ligand coordination, (2) hydrogen bonding, and (3) pi-pi stacking. NPBA forms one-dimensional (1-D) chains governed by hydrogen bonding, but when reacted with metal ions, it generates a wide variety of supramolecular scaffolds that control the arrangement of periodic nanostructures and form 1- (2-4), 2- (5), or 3-D (6-10) solid-state networks of hydrogen bonding and pi-pi stacking interactions in the crystal. Isostructural 7-9 exhibit a 2-D hydrogen bonding network that promotes topotaxial growth of single crystals of their isostructural family and generates crystal composites with two (11) and three (12) different components. Furthermore, 7-9 can also form crystalline solid solutions (M,M')(NPBA)2(NO3)(2)(MeOH)(2) (M, M' = Co2+, Ni2+, or Zn2+, 13-16), where mixtures of Co2+, Ni2+, and Zn2+ share the same crystal lattice in different proportions to allow the formation of materials with modulated magnetic moments. Finally, we report the effects that multidimensional noncovalent networks exert on the magnetic moments between 2 and 300 K of 1 -D (4), 2-D (5), and 3-D (7, 8, 10, and 13-16) paramagnetic networks.