Formation of mixed metal Cu 3-xZn x(btc) 2 frameworks with different zinc contents: Incorporation of Zn 2+ into the metal-organic framework structure as studied by solid-state NMR

Gul-E-Noor F, Jee B, Mendt M, Himsl D, Poeppl A, Hartmann M, Haase J, Krautscheid H, Bertmer M (2012)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Journal of Physical Chemistry C American Chemical Society

Book Volume: 116

Pages Range: 20866-20873

Journal Issue: 39

DOI: 10.1021/jp3054857

Abstract

Incorporation of Zn2+ into the Cu3(btc)2 metal–organic framework (HKUST-1) was successfully done with Zn2+ replacing Cu2+ in the paddle wheel unit up to 21% zinc. Detailed spectroscopic characterization of the resulting binuclear Cu–Zn paddle wheel units was carried out by 1H and 13C solid-state nuclear magnetic resonance (SSNMR). By intensity analysis of the NMR signals a quantitative determination of the Zn2+ content incorporated into the Cu3(btc)2 framework is possible. X-ray and EPR data verify the analysis. Surface areas were determined for the different samples that indicate a decreasing porosity with increasing zinc content. Water molecules coordinated to the zinc atoms remain in the structure even after evacuation. Their assignment was also confirmed by calculation of the pseudocontact or dipolar shift contribution from all unpaired electrons of surrounding paddle wheels.

Authors with CRIS profile

Dieter Himsl Professur für Katalyse Martin Hartmann Professur für Katalyse

Involved external institutions

Universität Leipzig DE Germany (DE)

How to cite

APA:

Gul-E-Noor, F., Jee, B., Mendt, M., Himsl, D., Poeppl, A., Hartmann, M.,... Bertmer, M. (2012). Formation of mixed metal Cu 3-xZn x(btc) 2 frameworks with different zinc contents: Incorporation of Zn 2+ into the metal-organic framework structure as studied by solid-state NMR. Journal of Physical Chemistry C, 116(39), 20866-20873. https://dx.doi.org/10.1021/jp3054857

MLA:

Gul-E-Noor, Farhana, et al. "Formation of mixed metal Cu 3-xZn x(btc) 2 frameworks with different zinc contents: Incorporation of Zn 2+ into the metal-organic framework structure as studied by solid-state NMR." Journal of Physical Chemistry C 116.39 (2012): 20866-20873.

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