Spin Order Transfer from a Parahydrogen Molecule to the Counterion in the Iridium Complex under the SABRE Conditions

Spin Order Transfer from a Parahydrogen Molecule to the Counterion in the Iridium Complex under the SABRE Conditions Full article

Journal

Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
ISSN: 1070-3284

Output data

Year: 2022, Volume: 48, Number: 9, Pages: 572-578 Pages count : 6 DOI: 10.1134/S1070328422080036

Tags

NMR spectroscopy, parahydrogen, hyperpolarization, iridium complexes, carbene ligands, signal amplification, parahydrogen-induced nuclear hyperpolarization

Authors

Garaeva V.V. ^1,2 , Spiridonov K.A. ^1,3 , Nikovskii I.A. ¹ , Peregudov A.S. ¹ , Kiryutin A.S. ^4,5 , Yurkovskaya A.V. ^4,5 , Polezhaev A.A. ^1,6 , Novikov V.V. ^1,2

Affiliations

1	Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
2	Moscow Institute of Physics and Technology (National Research University), Dolgoprudnyi, Moscow oblast, Russia
3	Moscow State University, Moscow, Russia
4	International Tomography Center, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
5	Novosibirsk State University, Novosibirsk, Russia
6	Bauman State Technical University (National Research University), Moscow, Russia

A possibility of generating spin polarization of 19F nuclei in the counterions that form no covalent bond with the metal center is shown for the first time for new iridium complexes synthesized by reversible binding with the substrate (pyridine) and parahydrogen. This makes it possible to observe the integral polarization of 19F nuclei in weakly coordinated tetrafluoroborate and hexafluorophosphate anions. The optimum parameters of the magnetic field strength for the maximum amplification of the 19F signal in two fluorine-containing anions are determined from the dependences of the signal intensity in the NMR spectra on the magnetic field strength for two synthesized iridium complexes.

Garaeva V.V. , Spiridonov K.A. , Nikovskii I.A. , Peregudov A.S. , Kiryutin A.S. , Yurkovskaya A.V. , Polezhaev A.A. , Novikov V.V.
Spin Order Transfer from a Parahydrogen Molecule to the Counterion in the Iridium Complex under the SABRE Conditions
Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya. 2022. V.48. N9. P.572-578. DOI: 10.1134/S1070328422080036 OpenAlex

Гараева В.В. , Спиридонов К.А. , Никовский И.А. , Перегудов А.С. , Кирютин А.С. , Юрковская А.В. , Полежаев А.А. , Новиков В.В.
Перенос спинового порядка с молекулы параводорода на противоион в комплексе иридия в условиях SABRE
Координационная химия. 2022. Т.48. №9. С.551-557. DOI: 10.31857/S0132344X22080035 OpenAlex

Submitted:	Dec 14, 2021
Accepted:	Jan 17, 2022
Published print:	Sep 7, 2022

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