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Syntheses of two imidazolate-4-amide-5-imidate linker-based hexagonal metal–organic frameworks with flexible ethoxy substituent (2013)

Mondal, Suvendu Sekhar ; Dey, Subarna ; Baburin, Igor A. ; Kelling, Alexandra ; Schilde, Uwe ; Seifert, Gotthard ; Janiak, Christoph ; Holdt, Hans-Jürgen

A rare example of in situ linker generation with the formation of soft porous Zn- and Co-MOFs (IFP-9 and -10, respectively) is reported. The flexible ethoxy groups of IFP-9 and -10 protrude into the 1D hexagonal channels. The gas-sorption behavior of both materials for H2, CO2 and CH4 showed wide hysteretic isotherms, typical for MOFs having a flexible substituent which can give rise to a gate effect.

Gate effects in a hexagonal zinc-imidazolate-4-amide-5-imidate framework with flexible methoxy substituents and CO2 selectivity (2013)

Mondal, Suvendu Sekhar ; Bhunia, Asamanjoy ; Baburin, Igor A. ; Jäger, Christian ; Kelling, Alexandra ; Schilde, Uwe ; Seifert, Gotthard ; Janiak, Christoph ; Holdt, Hans-Jürgen

A new imidazolate-4-amide-5-imidate based MOF, IFP-7, is generated, having flexible methoxy groups, which act as molecular gates for guest molecules. This allows highly selective CO2 sorption over N2 and CH4 gases.

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