Influence of bridging and chelating co-ligands on the distinct single-molecule magnetic behaviours in ZnDy complexes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F22%3A73615214" target="_blank" >RIV/61989592:15310/22:73615214 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlepdf/2022/nj/d2nj03793a" target="_blank" >https://pubs.rsc.org/en/content/articlepdf/2022/nj/d2nj03793a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d2nj03793a" target="_blank" >10.1039/d2nj03793a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of bridging and chelating co-ligands on the distinct single-molecule magnetic behaviours in ZnDy complexes

Popis výsledku v původním jazyce

Four new heterometallic ZnDy complexes, [ZnDy(L)(NO3)(3)(py)]center dot CH2Cl2 (1) (py stands for pyridine), [ZnDy(L)(mu-OAc)(OAc)(2)]center dot 3H(2)O (2), [ZnDy(L)(mu-OAc)(OAc)(NO3)] (3), and [ZnDy(L)(mu-piv)(piv)(2)][ZnDy(L)(mu-piv)(piv)(OAc)]center dot 1.5H(2)O (4), have been synthesized from a methyl substituted o-vanillin based compartmental Schiff base ligand, N,N&apos;-bis(3-methoxy-5-methylsalicylidene)-1,2-phenylenediamine (H2L), in association with various secondary co-ligands like acetate (OAc), nitrate and pivalate (piv), and magneto-structurally characterised. They possess a nearly identical [Zn(II)-Dy(III)] core, bridged by the phenoxo-O atoms of the compartmental Schiff base ligand. Magnetic studies revealed the distinct single-molecule magnetic (SMM) behaviours through single to multiple relaxation channels, in which 1, 2 and 4 can display slow relaxation of magnetisation at a zero dc field, the performance of which can be further improved by applying a magnetic field at the expense of the reduction of under barrier relaxation processes, while 3 shows only field-induced weaker slow magnetic relaxation behaviours. Ab initio calculations were performed for the in-depth understanding of the magnetic dynamics in these complexes. The difference in the magnetic behaviours of the four complexes can be ascribed to the effect of bridging/chelating co-ligands in these complexes. Therefore, the present report highlights that the magnetic anisotropy is sensitive to the bridging/chelating co-ligands used, leading to the distinct magnetic dynamics in these systems.

Název v anglickém jazyce

Influence of bridging and chelating co-ligands on the distinct single-molecule magnetic behaviours in ZnDy complexes

Popis výsledku anglicky

Four new heterometallic ZnDy complexes, [ZnDy(L)(NO3)(3)(py)]center dot CH2Cl2 (1) (py stands for pyridine), [ZnDy(L)(mu-OAc)(OAc)(2)]center dot 3H(2)O (2), [ZnDy(L)(mu-OAc)(OAc)(NO3)] (3), and [ZnDy(L)(mu-piv)(piv)(2)][ZnDy(L)(mu-piv)(piv)(OAc)]center dot 1.5H(2)O (4), have been synthesized from a methyl substituted o-vanillin based compartmental Schiff base ligand, N,N&apos;-bis(3-methoxy-5-methylsalicylidene)-1,2-phenylenediamine (H2L), in association with various secondary co-ligands like acetate (OAc), nitrate and pivalate (piv), and magneto-structurally characterised. They possess a nearly identical [Zn(II)-Dy(III)] core, bridged by the phenoxo-O atoms of the compartmental Schiff base ligand. Magnetic studies revealed the distinct single-molecule magnetic (SMM) behaviours through single to multiple relaxation channels, in which 1, 2 and 4 can display slow relaxation of magnetisation at a zero dc field, the performance of which can be further improved by applying a magnetic field at the expense of the reduction of under barrier relaxation processes, while 3 shows only field-induced weaker slow magnetic relaxation behaviours. Ab initio calculations were performed for the in-depth understanding of the magnetic dynamics in these complexes. The difference in the magnetic behaviours of the four complexes can be ascribed to the effect of bridging/chelating co-ligands in these complexes. Therefore, the present report highlights that the magnetic anisotropy is sensitive to the bridging/chelating co-ligands used, leading to the distinct magnetic dynamics in these systems.

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

2022

Kód důvěrnosti údajů

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

Název periodika

NEW JOURNAL OF CHEMISTRY

ISSN

1144-0546

e-ISSN

1369-9261

Svazek periodika

46

Číslo periodika v rámci svazku

39

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

18751-18763

Kód UT WoS článku

000855874000001

EID výsledku v databázi Scopus

2-s2.0-85139432892