Intercalation of Coordinatively Unsaturated FeIII Ion within Interpenetrated Metal–Organic Framework MOF‐5 |
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| Authors: | Rebecca J. Holmberg Thomas Burns Samuel M. Greer Dr. Libor Kobera Dr. Sebastian A. Stoian Dr. Ilia Korobkov Prof. Stephen Hill Prof. David L. Bryce Prof. Tom K. Woo Prof. Muralee Murugesu |
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| Affiliation: | 1. Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, Canada;2. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida, USA;3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA;4. Department of Physics, Florida State University, Tallahassee, Florida, USA |
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| Abstract: | Coordinatively unsaturated FeIII metal sites were successfully incorporated into the iconic MOF‐5 framework. This new structure, FeIII‐iMOF‐5, is the first example of an interpenetrated MOF linked through intercalated metal ions. Structural characterization was performed with single‐crystal and powder XRD, followed by extensive analysis by spectroscopic methods and solid‐state NMR, which reveals the paramagnetic ion through its interaction with the framework. EPR and Mössbauer spectroscopy confirmed that the intercalated ions were indeed FeIII, whereas DFT calculations were employed to ascertain the unique pentacoordinate architecture around the FeIII ion. Interestingly, this is also the first crystallographic evidence of pentacoordinate ZnII within the MOF‐5 SBU. This new MOF structure displays the potential for metal‐site addition as a framework connector, thus creating further opportunity for the innovative development of new MOF materials. |
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| Keywords: | coordinatively unsaturated MOF-5 iron metal-ion addition metal– organic framework |
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