Department of Applied Chemistry, College of Science and Technology, Hanyang University, 1271 Sa-3 dong, Ansan 426-791, Republic of Korea.
Inorg Chem. 2010 Dec 6;49(23):10833-9. doi: 10.1021/ic1012523. Epub 2010 Nov 9.
A simple and multitopic ligand, pyrimidine-5-carboxylate (pmc), has been used to obtain a series of metal-organic frameworks (MOFs) based on Co(2+), Cd(2+), and Cu(2+). The networks possess well-defined topologies of body-centered-cubic, rutile, and interpenetrated NbO structures, respectively. Among those, [Cu(pmc)(2)] possesses a permanent porosity resulting from straight one-dimensional channels of 5.5 Å free passages. Unexpectedly, this porous MOF displays a highly selective sorption behavior for CO(2), and the sorptions of N(2), Ar, O(2), H(2), and CH(4) at two different temperatures are found to be negligible. The results of diffraction and spectroscopic analyses exclude framework dynamics or incomplete evacuation as the origin of the gas-sorption selectivity.
一种简单的多齿配体嘧啶-5-羧酸（pmc）被用来获得一系列基于 Co(2+)、Cd(2+)和 Cu(2+)的金属-有机骨架（MOFs）。这些网络分别具有体心立方、金红石和互穿 NbO 结构的明确拓扑结构。其中，[Cu(pmc)(2)]具有永久的孔隙率，这是由于其具有 5.5Å 的自由通道的直一维通道。出乎意料的是，这种多孔 MOF 对 CO(2)表现出高度选择性的吸附行为，而在两个不同温度下对 N(2)、Ar、O(2)、H(2)和 CH(4)的吸附可以忽略不计。衍射和光谱分析的结果排除了框架动力学或不完全排空作为气体吸附选择性的起源。
