Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió acceptadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/154607
Ferromagnetism in polynuclear systems based on non- linear [(Mn2MnIII)-Mn-II] building blocks
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
The design of new polynuclear transition metal complexes showing large total spin values through parallel alignment of the spins is an important challenge due to the scarcity of bridging ligands that provide ferromagnetic coupling. Herein, we report two new complexes, a [(Mn4Mn2III)-Mn-II] system containing two non-linear [(Mn2MnIII)-Mn-II] units and a 1D chain system with [(Mn2MnIII)-Mn-II] units that are assembled through dicyanamide bridging ligands coordinated to one of the terminal Mn-II centers. In both cases, the main exchange interaction is between Mn-II center dot center dot center dot Mn-III, showing a relatively strong ferromagnetic coupling. Density functional theory calculations corroborate such ferromagnetic interactions and also provide one magnetostructural correlation, showing that larger Mn-II-O-Mn-III angles enhance the strength of the ferromagnetic coupling. Thus, the non-linear [(Mn2MnIII)-Mn-II] units present in these two complexes are specially suited because of their larger Mn-II-O-Mn-III angles compared to similar previously reported systems containing a linear [(Mn2MnIII)-Mn-II] unit.
Matèries (anglès)
Citació
Citació
CIRERA FERNÁNDEZ, Jordi, JIANG, Yuan, QIN, Lei, ZHENG, Yan-zhen, LI, Guanghua, WU, Gang, RUIZ SABÍN, Eliseo. Ferromagnetism in polynuclear systems based on non- linear [(Mn2MnIII)-Mn-II] building blocks. _Inorganic Chemistry Frontiers_. 2016. Vol. 3, núm. 10, pàgs. 1272-1279. [consulta: 26 de febrer de 2026]. ISSN: 2052-1553. [Disponible a: https://hdl.handle.net/2445/154607]