Lattice Modification and Morphological Control of Halide-Substituted yqt-Type Zeolitic Imidazolate Frameworks Zn3mim5X, with X = F, Br, Cl, or OH

Glante S, Wisser D, Hartmann M, Joos M, Dinnebier RE, Bette S (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Crystal Growth and Design American Chemical Society

Book Volume: 22

Pages Range: 3795-3807

Journal Issue: 6

DOI: 10.1021/acs.cgd.2c00174

Abstract

Zeolitic imidazolate frameworks (ZIFs) are a large subgroup of metal-organic frameworks (MOFs). The synthesis of ZIF phases showing a yqt-type framework by the reaction of methylimidazole (Hmim) with a zinc salt in an aqueous solution using different zinc salts like acetates, nitrates, chlorides, fluorides, bromides, iodides, and sulfates yields different morphologies and products: Zn3mim5XH2O·nH2O with X = Br, Cl and α-Zn3mim5X with X = F, OH. By thermal dehydration of the hydrated ZIF phases, a series of isostructural compounds, α-Zn3mim5X with X = Br, Cl, F, or OH, were obtained. The products were characterized by X-ray powder diffraction (XRPD) and vibrational (IR) and two-dimensional (2D) solid-state nuclear magnetic resonance (NMR) spectroscopy. In all structures, zinc exhibits tetrahedral coordination and forms a yqt net. Inorganic anions are incorporated into this net as Zn-X-Zn bridges and show a major impact on the reversible de- and rehydration behavior, as well as on the thermal expansion. The latter property is mainly governed by bending of the Zn-X-Zn bridge. Within this series, only the chloride-containing phase, showing the strongest anisotropic thermal expansion, exhibits two polymorphs: α- and β-Zn3mim5Cl, the α-form showing a bent and the β-form showing a linear Zn-X-Zn bridge.

Authors with CRIS profile

Stephan Glante Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC) Dorothea Wisser Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC) Martin Hartmann Professur für Katalyse

Involved external institutions

Max-Planck-Institut für Festkörperforschung DE Germany (DE)

How to cite

APA:

Glante, S., Wisser, D., Hartmann, M., Joos, M., Dinnebier, R.E., & Bette, S. (2022). Lattice Modification and Morphological Control of Halide-Substituted yqt-Type Zeolitic Imidazolate Frameworks Zn3mim5X, with X = F, Br, Cl, or OH. Crystal Growth and Design, 22(6), 3795-3807. https://doi.org/10.1021/acs.cgd.2c00174

MLA:

Glante, Stephan, et al. "Lattice Modification and Morphological Control of Halide-Substituted yqt-Type Zeolitic Imidazolate Frameworks Zn3mim5X, with X = F, Br, Cl, or OH." Crystal Growth and Design 22.6 (2022): 3795-3807.

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