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Phosphite-containing iridium polarization transfer catalysts for NMR signal amplification by reversible exchange Full article

Journal Mendeleev Communications
ISSN: 0959-9436
Output data Year: 2021, Volume: 31, Number: 4, Pages: 475-477 Pages count : 3 DOI: 10.1016/j.mencom.2021.07.012
Tags iridium complexes, carbene ligands, parahydrogen, hyperpolarization, NMR spectroscopy.
Authors Spiridonov Kirill A. 1,2 , Kozinenko Vitaly P. 3,4 , Nikovsky Igor A. 1 , Pavlov Alexander A. 1,5 , Vol'khina Tatyana N. 1 , Nelyubina Yulia V. 1,6 , Kiryutin Alexey S. 3,4 , Yurkovskaya Alexandra V. 3,4 , Polezhaev Alexabder A. 1,6 , Novikov Valentin V. 1,5 , Ivanov Konstantin L. 3,4
Affiliations
1 A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation.
2 Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
3 International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
4 Novosibirsk State University, 630090 Novosibirsk, Russian Federation
5 Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Moscow Region, Russian Federation
6 Bauman Moscow State Technical University, 105005 Moscow, Russian Federation

Abstract: Two new iridium complexes with an N-heterocyclic carbene and phosphite ligands have been synthesized and characterized. Bubbling of parahydrogen through their solutions resulted in the formation of several hydride complexes. In the presence of pyridine, this process is accompanied by transfer of spin order from the molecular hydrogen to pyridine molecules undergoing dynamic exchange between free and complex-bound states.
Cite: Spiridonov K.A. , Kozinenko V.P. , Nikovsky I.A. , Pavlov A.A. , Vol'khina T.N. , Nelyubina Y.V. , Kiryutin A.S. , Yurkovskaya A.V. , Polezhaev A.A. , Novikov V.V. , Ivanov K.L.
Phosphite-containing iridium polarization transfer catalysts for NMR signal amplification by reversible exchange
Mendeleev Communications. 2021. V.31. N4. P.475-477. DOI: 10.1016/j.mencom.2021.07.012 WOS OpenAlex
Dates:
Submitted: Dec 8, 2020
Published online: Aug 20, 2021
Identifiers:
Web of science: WOS:000687981200012
OpenAlex: W3193864625
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