Magnetic properties of metal–quinone high-spin complexes prepared by solid-state mechano-activation and by chemical synthesis in solution. Comparative study with very high-field and low-temperature EPR and ENDOR

Авторы: Chemerisov S.D., Perekhodtsev G.D., Tipikin D.S., Lebedev Ya S., Prokof\ev A.I., Aleksandrov A.I., Dubinskii A.A., Möbius K., Poluektov O.G., Schmidt J.
Журнал: JOURNAL OF THE CHEMICAL SOCIETY, FARADAY TRANSACTIONS
Том: 92
Номер: 11
Год издания: 1996
Первая страница: 1959
Последняя страница: 1968
DOI: 10.1039/ft9969201959
Аннотация: EPR spectroscopy at high frequencies and low temperatures and ENDOR spectroscopy at X- and W-bands have been applied toinvestigate two- and three-spin complexes of the type MQ,' and MQ3' generated by mechanochemical treatment (by grinding orby the action of elastic waves) of solid mixtures of quinones and metals (M = Al, Ga, In, Cd, Sn, Zn). In addition, complexesobtained in liquid-phase reactions of metal amalgams with quinones were investigated. The magnetic-resonance parameters andthe observed thermal spin polarization provide evidence for the identity of the magnetic complexes produced in solutions and bysolid-state mechanochemical treatment. In particular, the presence of ground-state triplet and quartet species has been demonstrated in both cases. In addition, the exchange and the dipoledipole interaction parameters were evaluated, their comparisonproviding information about the electronic intramolecular interaction.
Добавил в систему: Александров Алексей Иванович

	ИСТИНА	Войти в систему Регистрация
	ФНКЦ РР
	Главная Поиск Статистика О проекте Помощь

ИСТИНА