A Distorted [Mn<sub>2</sub>(COO)<sub>4</sub>N<sub>2</sub>] Cluster Based Metal–Organic Framework with (3,3,6) Topology and Selective Adsorption of CO<sub>2</sub> JiangJingjing WangQian ZhangMingxing BaiJunfeng 2017 On the basis of the ligand of 5-(pyridin-3-yl)­isophthalic acid (H<sub>2</sub>L), a new distorted [Mn<sub>2</sub>(COO)<sub>4</sub>N<sub>2</sub>] cluster based metal–organic framework with (3,3,6) topology, [Mn<sub>2</sub>(L)<sub>2</sub>DMF]­·DMF·MeOH (NJU-Bai33; DMF = <i>N</i>,<i>N</i>- dimethylformamide), was synthesized, which exhibits a new point (Schläfli) symbol of (4·6<sup>2</sup>)<sub>2</sub>(4<sup>2</sup>·6<sup>8</sup>·8<sup>5</sup>), contains open metal sites, and shows selective adsorption of CO<sub>2</sub> over N<sub>2</sub> and CH<sub>4</sub> with CO<sub>2</sub> uptake amounts high up to 7.9 and 4.2 wt % at 0.15 bar and at 273 and 298 K, respectively.