Novel 2D and 3D indium metal-organic frameworks:: Topology and catalytic properties
Novel 2D and 3D indium metal-organic frameworks:: Topology and catalytic properties
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DOI：
10.1021/cm047748r
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发表时间：
2005-05-17
影响因子：
8.6
通讯作者：
Snejko, N
中科院分区：
文献类型：
--
作者：
Gómez-Lor, B;Gutiérrez-Puebla, E;Snejko, N
四种新颖的金属有机骨架化合物[In（BDC）（1.5）（bipy）]（1）、[In-2（OH）（2）（BDC）（2）（phen）（2）]（2）[In（BTC）（H2O）（bipy）]（3）和[In（BTC）（H2O）（phen）]（4）（BDC = 1，4-苯二甲酸，BTC = 1，3，5-苯三甲酸，bipy = 2，2 '-联吡啶，phen = o-菲咯啉），并通过X-射线单晶衍射测定了它们的结构。从结构上讲，我们可以得出结论，虽然金属/连接体/螯合物的比率为1：1：1，但螯合物配体（如bipy或phen）的引入阻止了在一个方向上连接的可能性，从而诱导形成2D结构。在化合物1的情况下，每铟额外的二分之一BDC配体有利于金属的八配位，并驱动链状3D结构的形成。拓扑结构研究表明，4个化合物的I为一个六角层的斜链状结构，2、3和4个化合物分别为（4（4））、（6（3））和（4.8（2））型的三个叉指层状结构.三种新的In化合物在醛的缩醛化反应中是活性和选择性的酸催化剂。
Four novel metal-organic frameworks (MOFs) [In(BDC)(1.5)(bipy)] (1), [In-2(OH)(2)(BDC)(2)(phen)(2)] (2) [In(BTC)(H2O)(bipy)] (3), and [In(BTC)(H2O)(phen)] (4) (BDC = 1,4-benzendicarboxylic acid, BTC = 1,3,5-benzenetricarboxylic acid, bipy = 2,2'-bipyridyl, phen = o-phenantroline) were synthesized and their structures were determined by X-ray single-crystal diffraction. Structurally speaking we can conclude that while the metal/connector/chelate rate is 1: 1: 1, the introduction of a chelate ligand, such as bipy or phen, blocks the possibility of connections in one direction, inducting the formation of 2D structures. In the case of compound 1, the extra one-half of BDC ligand per indium favors the eight coordination of the metal and drives the formation of a catenated 3D structure. Topological studies on the four compounds show one inclined catenation of hexagonal layers for I and three interdigitated layered structures with 2D topologies of type (4(4)), (6(3)) and (4.8(2)) for 2, 3, and 4 compounds, respectively. Three of the new In compounds are active and selective acid catalyst in acetalization of aldehydes.