Insight into ferromagnetic interactions in CuII-LnIII dimers with a compartmental ligand

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73627678" target="_blank" >RIV/61989592:15310/24:73627678 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/dt/d3dt03557c" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/dt/d3dt03557c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3dt03557c" target="_blank" >10.1039/d3dt03557c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Insight into ferromagnetic interactions in CuII-LnIII dimers with a compartmental ligand

Popis výsledku v původním jazyce

In the last two decades, efforts have been devoted to obtaining insight into the magnetic interactions between Cu-II and Ln(III) utilizing experimental and theoretical means. Experimentally, it has been observed that the exchange coupling (J) in Cu-II-Ln(III) systems is often found to be ferromagnetic for &gt;= 4f(7) metal ions. However, exchange interactions at sub-Kelvin temperatures between Cu-II and the anisotropic/isotropic Ln(III) ions are not often explored. In this report, we have synthesized a series of heterobimetallic [CuLn(HL)(mu-piv)(piv)(2)] complexes (Ln(III) = Gd (1), Tb (2), Dy (3) and Er (4)) from a new compartmental Schiff base ligand, N,N&apos;-bis(3-methoxy-5-methylsalicylidene)-1,3-diamino-2-propanol (H3L). X-ray crystallographic analysis reveals that all four complexes are isostructural and isomorphous. Magnetic susceptibility measurements reveal a ferromagnetic coupling between the Cu-II ion and its respective Ln(III) ion for all the complexes, as often observed. Moreover, mu-SQUID studies, at sub-Kelvin temperatures, show S-shaped hysteresis loops indicating the presence of antiferromagnetic coupling in complexes 1-3. The antiferromagnetic interaction is explained by considering the shortest Cu &amp; ctdot;Cu distance in the crystal structure. The nearly closed loops for 1-3 highlight their fast relaxation characteristics, while the opened loops for 4 might arise from intermolecular ordering. CASSCF calculations allow the quantitative assessment of the interactions, which are further supported by BS-DFT calculations.

Název v anglickém jazyce

Insight into ferromagnetic interactions in CuII-LnIII dimers with a compartmental ligand

Popis výsledku anglicky

In the last two decades, efforts have been devoted to obtaining insight into the magnetic interactions between Cu-II and Ln(III) utilizing experimental and theoretical means. Experimentally, it has been observed that the exchange coupling (J) in Cu-II-Ln(III) systems is often found to be ferromagnetic for &gt;= 4f(7) metal ions. However, exchange interactions at sub-Kelvin temperatures between Cu-II and the anisotropic/isotropic Ln(III) ions are not often explored. In this report, we have synthesized a series of heterobimetallic [CuLn(HL)(mu-piv)(piv)(2)] complexes (Ln(III) = Gd (1), Tb (2), Dy (3) and Er (4)) from a new compartmental Schiff base ligand, N,N&apos;-bis(3-methoxy-5-methylsalicylidene)-1,3-diamino-2-propanol (H3L). X-ray crystallographic analysis reveals that all four complexes are isostructural and isomorphous. Magnetic susceptibility measurements reveal a ferromagnetic coupling between the Cu-II ion and its respective Ln(III) ion for all the complexes, as often observed. Moreover, mu-SQUID studies, at sub-Kelvin temperatures, show S-shaped hysteresis loops indicating the presence of antiferromagnetic coupling in complexes 1-3. The antiferromagnetic interaction is explained by considering the shortest Cu &amp; ctdot;Cu distance in the crystal structure. The nearly closed loops for 1-3 highlight their fast relaxation characteristics, while the opened loops for 4 might arise from intermolecular ordering. CASSCF calculations allow the quantitative assessment of the interactions, which are further supported by BS-DFT calculations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Dalton Transactions

ISSN

1477-9226

e-ISSN

1477-9234

Svazek periodika

53

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

2501-2511

Kód UT WoS článku

001141023000001

EID výsledku v databázi Scopus

2-s2.0-85182388243