Gas sorption of nano-porous supramolecules formed by multi-hydrogen bonded coordination capsules
Gas sorption of nano-porous supramolecules formed by multi-hydrogen bonded coordination capsules
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多氢键配位胶囊形成的纳米多孔超分子的气体吸附
DOI：
10.1039/d0cc07869g
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发表时间：
2021
影响因子：
4.9
通讯作者：
Nakamura Takayoshi
中科院分区：
文献类型：
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作者：
Tadokoro Makoto;Machida Hironobu;Toyofuku Ryuji;Murakami Megumi;Kamebuchi Hajime;Isoda Kyosuke;Kobayashi Fumiya;Takahashi Kiyonori;Noro Shin'ichiro;Nakamura Takayoshi
[{REI(CO)3(HBIM)}3(Tpta)]2(1，HBIM−=2，2‘-联咪唑单阴离子，tpta=2，4，6-三吡啶-1，3，5-三嗪)是一种新型的氢键配位胶囊。汉堡包状半单元[{REI(CO)3(HBIM)}3(TPTA)]含有6个HBIM−配体的分子间氢键，其中3个[REI(CO)3(HBIM)]通过桥联的三齿TPTA配位。有趣的是，机械研磨容易将1的单晶转化为结晶度较低的非晶态，同时保持纳米空间的孔。研磨样品可以可逆地吸收和释放二氧化碳和(CH2Cl2)2等小分子。
[{ReI(CO)3(Hbim)}3(tpta)]2 (1, Hbim− = 2,2′-biimidazolate monoanion, tpta = 2,4,6-tripyridyl-1,3,5-triazine) was prepared as a nano-space supramolecule by using a new group of H-bonded coordination capsules. The hamburger bun-shaped half unit [{ReI(CO)3(Hbim)}3(tpta)] contains six intermolecular H-bonds of Hbim− ligands with complementary dual NH⋯N types, and three [ReI(CO)3(Hbim)] are coordinated by bridging tridentate tpta. Interestingly, mechanical grinding easily would convert single crystals of 1 to an amorphous state with minor crystallinity while maintaining the nano-space pores. The ground sample can reversibly uptake and release small molecules such as CO2 and (CH2Cl)2.