Fernández de Luis Roberto, Larrea Edurne S, Orive Joseba, Fidalgo-Marijuan Arkaitz, Lezama Luis, Arriortua María I
BCMaterials (Basque Center for Materials, Applications & Nanostructures), Technological Park of Zamudio, Camino de Ibaizabal, Bndg. 500-1st, 48160, Derio, Spain.
Dalton Trans. 2018 Jan 15;47(3):958-970. doi: 10.1039/c7dt04081d.
Two closed and one open structural forms of the interpenetrated Cu(Tae)(Bpa)·nHO (HTae = 1,1,2,2-tetraacetylethane, Bpa = 1,2-bis(4-pyridyl)ethane) cationic coordination polymer have been synthesized. Three crystallographically related interpenetrated "ths" cationic nets encapsulate water molecules and nitrate anions giving rise to the closed structural forms of Cu(Tae)(Bpa)·nHO. Depending on the location of water molecules and nitrate groups, two different closed forms with 5.5 and 3.6 crystallization water molecules have been obtained. The thermal activation of the closed structures gives rise to a 29% expansion of the unit cell. This closed to open transformation is reversible, and is triggered by the loss or uptake of solvent. The high pressure gas adsorption experiments show similar selectivity values towards CO for CO/CH mixtures to that showed by some metal organic frameworks without unsaturated metal sites, and isosteric heats for CO adsorption similar to that for the HKUST-1 compound.
已合成了互穿的Cu(Tae)(Bpa)·nHO（HTae = 1,1,2,2 - 四乙酰乙烷，Bpa = 1,2 - 双(4 - 吡啶基)乙烷）阳离子配位聚合物的两种封闭结构形式和一种开放结构形式。三个晶体学相关的互穿“ths”阳离子网络包封水分子和硝酸根阴离子，产生了Cu(Tae)(Bpa)·nHO的封闭结构形式。根据水分子和硝酸根基团的位置，获得了具有5.5个和3.6个结晶水分子的两种不同封闭形式。封闭结构的热活化导致晶胞膨胀29%。这种从封闭到开放的转变是可逆的，由溶剂的损失或吸收引发。高压气体吸附实验表明，对于CO/CH混合物，其对CO的选择性值与一些没有不饱和金属位点的金属有机框架所显示的相似，并且CO吸附的等量吸附热与HKUST - 1化合物的相似。
