Zn2(etim)2CO3, the Ethylimidazole Analog of the Zinc Methylimidazolate Framework
Glante S, Hartmann M, Lotsch BV, Bette S (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Abstract
Zeolitic imidazolate frameworks (ZIFs) attract broad scientific interest due to their structural relation to zeolites. As a consequence, identical underlying zeolite-like net structures can be identified in ZIF-compounds. By functionalization of the imidazolate linker by alkyl- or aryl residues, the crystallization of ZIFs into new framework topologies and direct control of network formation is facilitated. Using imidazolate linkers with different functionalization rarely leads to the formation of the same underlying net. By reacting zinc nitrate and 2-ethylimidazol (Hetim) in DMF under ambient atmosphere, Zn2(etim)2CO3 denoted as ZIF-CO3-2 is obtained, as there are two carbon atoms in the alky residues of 2-ethylimidazolate. The presence of 2-ethylimidazolate and carbonate in the bulk phase is confirmed by IR-spectroscopy and the structure is elucidated from laboratory X-ray powder diffraction data. The underlying net is identified as moganite-type (mog), and surprisingly, the compound found to be isostructural to Zn2(mim)2CO3, ZIF-CO3-1, with mim = methylimidazolate. The replacement of 2-methylimidazolate by bulkier 2-ethylimidazolate leads to an anisotropic deformation of the unit cell. This results in ellipsoidal channels, running in c-direction, which are more rounded in ZIF-CO3-2 compared to ZIF-CO3-1.
Authors with CRIS profile
Stephan Glante
Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC)
Martin Hartmann
Professur für Katalyse
Involved external institutions
Germany (DE)How to cite
APA:
Glante, S., Hartmann, M., Lotsch, B.V., & Bette, S. (2025). Zn2(etim)2CO3, the Ethylimidazole Analog of the Zinc Methylimidazolate Framework. Zeitschrift für Anorganische und Allgemeine Chemie. https://doi.org/10.1002/zaac.202500152
MLA:
Glante, Stephan, et al. "Zn2(etim)2CO3, the Ethylimidazole Analog of the Zinc Methylimidazolate Framework." Zeitschrift für Anorganische und Allgemeine Chemie (2025).
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