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Issue 32, 2019
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Mixed precious-group metal–organic frameworks: a case study of the HKUST-1 analogue [RuxRh3−x(BTC)2]

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Abstract

This work presents the first full series of mixed precious-group metal–organic frameworks (MPG-MOFs) using ruthenium and rhodium. The obtained crystalline, highly porous and thermally robust materials were characterized by means of powder X-ray diffraction, N2/CO2 sorption isotherms, thermogravimetry, spectroscopy methods (IR, Raman, UV/VIS-, NMR and XPS) and as well by high resolution transmission electron microscopy (HR-TEM) with elemental mapping (HAADF-EDS). Additionally, the assignment of spectroscopic data is supported by computational (time dependent)-density functional theory methods. The materials turned out to consist of homogeneously dispersed Ru2 and Rh2 paddlewheel units being linked by benzenetricarboxylate (BTC) to yield a framework that is isoreticular to [Cu3(BTC)2] (HKUST-1, Hong Kong University of Science and Technology). However, acetate (OAc) is incorporated as an intrinsic component which compensates for missing BTC-linker defects and some Cl is coordinated to the Ru centre at an apical position. The exact empirical formula of the MPG-MOFs is derived as [RuxRh3−x(BTC)2−a(OAc)b(Cl)c].

Graphical abstract: Mixed precious-group metal–organic frameworks: a case study of the HKUST-1 analogue [RuxRh3−x(BTC)2]

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Publication details

The article was received on 20 Mar 2019, accepted on 13 Jun 2019 and first published on 18 Jun 2019


Article type: Paper
DOI: 10.1039/C9DT01198F
Dalton Trans., 2019,48, 12031-12039

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    Mixed precious-group metal–organic frameworks: a case study of the HKUST-1 analogue [RuxRh3−x(BTC)2]

    W. R. Heinz, T. Kratky, M. Drees, A. Wimmer, O. Tomanec, S. Günther, M. Schuster and R. A. Fischer, Dalton Trans., 2019, 48, 12031
    DOI: 10.1039/C9DT01198F

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