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2H Solid‐State NMR Spectroscopy Reveals the Dynamics of a Pyridine Probe Interacting with Coordinatively Unsaturated Metal Sites of MIL‐100(Al) Metal–Organic Frameworks ArticleGenre_short.SHORT_COMMUNICATION

Journal Chemistry - A European Journal
ISSN: 0947-6539 , E-ISSN: 1521-3765
Output data Year: 2019, Volume: 25, Number: 46, Pages: 10808–10812 Pages count : 5 DOI: 10.1002/chem.201901956
Tags adsorption; coordinatively unsaturated metal sites; metal–organic frameworks; molecular mobility; NMR spectroscopy
Authors Khudozhitkov Alexander E. 1,2 , Toktarev Alexander V. 1 , Arzumanov Sergei S. 1,2 , Gabrienko Anton A. 1,2 , Kolokolov Daniil I. 1,2 , Stepanov Alexander G. 1,2
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences
2 Novosibirsk State University, Pirogova Street 2, Novosibirsk 630090 (Russia)

Funding (2)

1 Federal Agency for Scientific Organizations 0303-2016-0003
2 Russian Foundation for Basic Research 18-29-04009

Abstract: Coordinatively unsaturated metal sites (CUS) play an important role in catalysis by metal‐organic frameworks (MOF). Being an intrinsic part of the framework the CUS take the role of acidic sites active in industrially relevant processes such as condensation or oxidation reactions. The key step of such reactions represents the coordination of the reagents to CUS. In MOFs the mechanism of the reagent interaction with CUS is poorly understood. Herein, we characterize the interaction of a widely used acidity probe pyridine with CUS of MIL‐100(Al) MOF by means of the 2H solid‐state NMR spectroscopy. 2H NMR reveals that pyridine species, which are interacting with CUS and the ones which are coordinated to the Al−OH site, exhibit different motional behavior. 2H NMR line shape as well as T1, T2 relaxation analyses for [D5]pyridine adsorbed in MIL‐100(Al) allowed us to perform a detailed characterization of pyridine dynamics in both states including the kinetics of the exchange process between these adsorption states.
Cite: Khudozhitkov A.E. , Toktarev A.V. , Arzumanov S.S. , Gabrienko A.A. , Kolokolov D.I. , Stepanov A.G.
2H Solid‐State NMR Spectroscopy Reveals the Dynamics of a Pyridine Probe Interacting with Coordinatively Unsaturated Metal Sites of MIL‐100(Al) Metal–Organic Frameworks
Chemistry - A European Journal. 2019. V.25. N46. P.10808–10812. DOI: 10.1002/chem.201901956 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Dates:
Submitted: Apr 29, 2019
Accepted: Jun 26, 2019
Published online: Jul 19, 2019
Published print: Aug 14, 2019
Identifiers:
Web of science: WOS:000481420300006
Scopus: 2-s2.0-85069726186
Elibrary: 41625415
Chemical Abstracts: 2019:1412513
Chemical Abstracts (print): 177:65571
PMID: 31241210
OpenAlex: W2954322393
Citing:
DB Citing
Scopus 20
Web of science 20
Elibrary 20
OpenAlex 24
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