Using Redox-Active π Bridging Ligand as a Control Switch of Intramolecular Magnetic Interactions | Sciact - CRIS-система Института катализа

Using Redox-Active π Bridging Ligand as a Control Switch of Intramolecular Magnetic Interactions Научная публикация

Журнал

Journal of the American Chemical Society
ISSN: 0002-7863 , E-ISSN: 1520-5126

Вых. Данные

Год: 2019, Том: 141, Номер: 19, Страницы: 7721-7725 Страниц : 5 DOI: 10.1021/jacs.9b03044

Ключевые слова

GROUND-STATE; COMPLEXES

Авторы

Ma Xiaozhou ^1,2 , Suturina Elizaveta A. ³ , Rouzières Mathieu ^1,2 , Platunov Mikhail ⁴ , Wilhelm Fabrice ⁴ , Rogalev Andrei ⁴ , Clérac Rodolphe ^1,2 , Dechambenoit Pierre ^1,2

Организации

1	CNRS, CRPP, UMR 5031, Pessac F-33600, France
2	Univ. Bordeaux, CRPP, UMR 5031, Pessac F-33600, France
3	Centre for Sustainable Chemical Technologies (CSCT), University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
4	ESRF-The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France

Intramolecular magnetic interactions in the dinuclear complexes [(tpy)Ni(tphz)Ni(tpy)](n+) (n = 4, 3, and 2; tpy, terpyridine; tphz, tetrapyridophenazine) were tailored by changing the oxidation state of the pyrazine-based bridging ligand. While its neutral form mediates a weak antiferromagnetic (AF) coupling between the two S = 1 Ni(II), its reduced form, tphz(center dot-), promotes a remarkably large ferromagnetic exchange of +214(5) K with Ni(II) spins. Reducing twice the bridging ligand affords weak Ni-Ni interactions, in marked contrast to the Co(II) analogue. Those experimental results, supported by a careful examination of the involved orbitals, provide a clear understanding of the factors which govern strength and sign of the magnetic exchange through an aromatic bridging ligand, a prerequisite for the rational design of strongly coupled molecular systems and high T-C molecule-based magnets.

Ma X. , Suturina E.A. , Rouzières M. , Platunov M. , Wilhelm F. , Rogalev A. , Clérac R. , Dechambenoit P.
Using Redox-Active π Bridging Ligand as a Control Switch of Intramolecular Magnetic Interactions

Journal of the American Chemical Society. 2019. V.141. N19. P.7721-7725. DOI: 10.1021/jacs.9b03044 WOS Scopus РИНЦ CAPlus OpenAlex

Полный текст от издателя

Поступила в редакцию:	27 мар. 2019 г.
Опубликована online:	26 апр. 2019 г.
Опубликована в печати:	15 мая 2019 г.

Web of science:	WOS:000468366900013
Scopus:	2-s2.0-85065758947
РИНЦ:	38980541
Chemical Abstracts:	2019:847238
OpenAlex:	W2941160447

БД	Цитирований
Web of science	29
Scopus	29
OpenAlex	28