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Synthesis and structure of a complex having a quartet ground state with three entirely different spin carriers: Nitronyl nitroxide, o-semiquinone, and Cu-IIстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 декабря 2015 г.
- Авторы: Shultz D.A., Bodnar S.H., Vostrikova K.E., Kampf J.W.
- Журнал: Inorganic Chemistry
- Том: 39
- Номер: 26
- Год издания: 2000
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 6091
- Последняя страница: 6093
- DOI: 10.1021/ic0009122
- Аннотация: A "spin diverse" S = 3/2 ground-state complex, NN-SQCuTp(Cum,Me), has been prepared. The three S = 1/2 spin carriers are nitronyl nitroxide (NN), o-semiquinone (o-SQ), and cupric ion. The solid-state structure of the Zn-II derivative, NN-SQZnTp(Cum,Me) (C56H69BN8O4Zn), was determined: monoclinic, P2(1)/c, a = 12.5781(12) Angstrom, b = 17.7408(17) Angstrom, c = 24.440(2) Angstrom, alpha = 90.00 degrees, beta = 98.240(2)degrees, gamma = 90.00 degrees, Z = 4. The results of X-ray structural characterization of the Zn-II derivative suggest substantial interaction between the two spin carriers NN and o-SQ. Indeed, strong intramolecular exchange coupling has been determined by variable-temperature magnetic susceptibility studies. Intraligand ferromagnetic exchange is considerably greater than kT, such that only the triplet state is populated at 300 K, and Cu-II-ligand exchange is ferromagnetic, with J = +75 cm(-1).
- Добавил в систему: Vostrikova Kira E.