Reported here is a new microporous metalâorganic framework, namely [Zn2(L)(btc)(Hbtc)] [NH2(CH3)2]·(DMF)2 (H2O)4(1), which is synthesized solvo(hydro)thermally by the self-assembly of Zn(NO3)2, N4,N4-di(pyridin-3-yl)-[1,1â²-biphenyl]-4,4â²-dicarboxamide (L) and 1,3,5-benzenetricarboxylate acid (H3btc). Its topology can be described as a four-connecting 4264 matrix containing both tetrahedral metal and ligand nodes. Interestingly, such a matrix has the same topology symbol as that observed in the well known sodalite (SOD) net, but the td10 of 434 is different from the td10 of 791 for the SOD net, indicative of an exceptional four-connecting 4264 net. Another outstanding point is the highly selective adsorption of CO2 over N2, possibly contributed by a combined effect from the charged skeleton, the existence of functional groups of âCONHâ and âCOOH in 1.
本文报告的是一种新型微孔
金属有机框架,即[Zn2(L)(btc)(Hbtc)] [NH2(
CH3)2]Â-(
DMF)2 (
H2O)4(1)、它是通过 Zn(
NO3)2、N4,N4-二(
吡啶-3-基)-[1,1â²-
联苯]-4,4â²-二甲酰胺(L)和 1,3,5-苯三
甲酸(H3btc)的自组装而溶液(
水)热合成的。它的拓扑结构可以描述为一个包含四面体
金属和
配体节点的四连通 4264 矩阵。有趣的是,这种矩阵的拓扑符号与众所周知的
钠长石(SOD)网中观察到的拓扑符号相同,但 434 的td10 与 SOD 网中 791 的td10 不同,表明这是一种特殊的四连接 4264 网。另一个显著特点是
二氧化碳对 N2 的高选择性吸附,这可能是由于带电骨架、1.COOH 和 2.COOH官能团的存在、1.COOH和 2.COOH官能团的结合效应。