Issue 48, 2022

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

Abstract

A new rare earth based two-dimensional coordination network and a three-dimensional metal–organic framework (MOF) have been synthesized using bicinchoninic acid (BCA) and yttrium(III) ions. Yttrium dimer nodes are formed in the absence of a modulator, resulting in a 2D layered coordination network (Y–BCA-2D). The presence of fluorinating agents, e.g., 2-fluorobenzoic acid (2-FBA), 2,6-difluorobenzoic acid (2,6-DFBA), and perfluorohexanoic acid (PFHxA) result in μ3-F bridged metal hexaclusters (Y6F8) that form a three-dimensional MOF (Y–BCA-3D). It was found that Y3+ can break highly stable C–F bonds in aromatic and aliphatic fluorinated compounds. Single-crystal X-ray diffraction (SC-XRD) shows the presence of fluorine in the metal cluster which was confirmed by energy dispersive X-ray spectroscopy (EDS). High resolution X-ray photoelectron spectroscopy (XPS) and 19F Nuclear Magnetic Resonance (NMR) also verify the presence of metal–fluorine bonds in the cluster. The Y–BCA-3D MOF selectively adsorbs CO2 but not N2.

Graphical abstract: Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

Supplementary files

Article information

Article type
Edge Article
Submitted
14 Sept. 2022
Accepted
22 Nov. 2022
First published
26 Nov. 2022
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2022,13, 14285-14291

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

M. Abbas, A. M. Maceda, H. R. Firouzi, Z. Xiao, H. D. Arman, Y. Shi, H. Zhou and K. J. Balkus, Chem. Sci., 2022, 13, 14285 DOI: 10.1039/D2SC05143E

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