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Selective Gas Adsorption and Unique Structural Topology of a Highly Stable Guest‐Free Zeolite‐Type MOF Material with N‐rich Chiral Open Channels
Author(s) -
Li JianRong,
Tao Ying,
Yu Qun,
Bu XianHe,
Sakamoto Hirotoshi,
Kitagawa Susumu
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200701447
Subject(s) - microporous material , zeolite , adsorption , ligand (biochemistry) , metal organic framework , topology (electrical circuits) , thermal decomposition , molecule , thermal stability , chemistry , porosity , crystallography , materials science , chemical engineering , catalysis , organic chemistry , biochemistry , receptor , mathematics , combinatorics , engineering
Abstract A new multifunctional di‐topic tetrazolate‐based ligand, 2,3‐di‐1 H ‐tetrazol‐5‐ylpyrazine (H 2 dtp) has been designed and synthesized. The solvothermal reaction of this ligand with ZnCl 2 gave a robust guest‐free three‐dimensional zeolite‐like chiral metal‐organic framework (MOF) complex, [Zn(dtp)], which crystallized in chiral space group P 6 1 and possessed chiral open channels with nitrogen‐rich walls and the diameter of approximately 4.1 Å. This framework presents a unique uniform etd (8,3) topology, is the first example of its type in MOFs, and exhibits high thermal stability with the decomposition temperature above 380 °C and permanent porosity. It is interesting that this material is able to selectively adsorb O 2 and CO 2 over N 2 gas, being a rare example in MOFs. In addition, C 2 H 2 and MeOH adsorption results show that although the framework channel holds nitrogen‐rich walls that may provide H‐bonding sites, no N⋅⋅⋅H H‐bond effect between the guest molecules and microporous surface was observed.