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In Situ Synthesis of an Imidazolate-4-amide-5-imidate Ligand and Formation of a Microporous Zinc–Organic Framework with H2-and CO2-Storage Ability


  • Financial Support from the Deutsche Forschungsgemeinschaft is gratefully acknowledged (SPP 1362 “Porous metal-organic frameworks”, HO 1706/7-1). We thank Dr. Guoying Zhao for a discussion on CO2 adsorption, and Prof. V. A. Blatov for providing help in describing the underlying net topology.


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Narrow channels with polar walls are the structural and functional features responsible for the high capacity of a zinc–organic framework based on an imidazolate–amide–imidate ligand for the uptake of H2 and CO2 (see structure: orange Zn, blue N, red O, dark gray C, light gray H). The rigid and stable chelating ligand was synthesized in situ by partial hydrolysis of a dicyanoimidazole compound.

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