Investigation of a C(sp2)-coupled nitronyl nitroxide diradical by electron paramagnetic resonance

Investigation of a C(sp2)-coupled nitronyl nitroxide diradical by electron paramagnetic resonance Full article

Journal

Russian Chemical Bulletin
ISSN: 1066-5285

Output data

Year: 2021, Volume: 70, Number: 12, Pages: 2370-2374 Pages count : 5 DOI: 10.1007/s11172-021-3355-4

Authors

Samsonenko A.A. ^1,2 , Tolstikov S.E. ¹ , Ovcharenko V.I. ¹ , Fedin M.V. ^1,2 , Veber S.L. ^1,2

Affiliations

1	International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a ul. Institutskaya, 630090, Novosibirsk, Russia
2	Novosibirsk State University, 2 ul. Pirogova, 630090 Novosibirsk, Russian Federation

A heteroatomic analog of 1,1,2,3,3-pentamethylenepropane, the diradical N-[bis(4,4,5,5tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl)methylene]-2-methylpropane-2amine oxide (1) with two C(sp2)-bonded nitronyl nitroxide fragments in magnetically concentrated (single crystal) and magnetically diluted (frozen solution) forms was studied by EPR spectroscopy. The longitudinal and transverse relaxation times of diradical 1 in the frozen solution were measured for the fi rst time; a signifi cant diff erence in the intramolecular exchange interaction was demonstrated for the cases of the single crystal and the frozen solution. The infl uence of solvation on the value of the intramolecular exchange interaction in this class of compounds was discussed.

Samsonenko A.A. , Tolstikov S.E. , Ovcharenko V.I. , Fedin M.V. , Veber S.L.
Investigation of a C(sp2)-coupled nitronyl nitroxide diradical by electron paramagnetic resonance
Russian Chemical Bulletin. 2021. V.70. N12. P.2370-2374. DOI: 10.1007/s11172-021-3355-4 WOS Scopus

Web of science:	WOS:000749178900013
Scopus:	2-s2.0-85123535084

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