The first exploration of coordination chemistry using a methyl substituted o-vanillin based ligand: an example starting with Dy-4/Zn2Dy2 systems displaying slow relaxation of magnetization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F22%3A73615123" target="_blank" >RIV/61989592:15310/22:73615123 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlehtml/2022/nj/d1nj05717k" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2022/nj/d1nj05717k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d1nj05717k" target="_blank" >10.1039/d1nj05717k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The first exploration of coordination chemistry using a methyl substituted o-vanillin based ligand: an example starting with Dy-4/Zn2Dy2 systems displaying slow relaxation of magnetization

Popis výsledku v původním jazyce

The literature has witnessed the exceptionally rich coordination chemistry, ranging from monomeric species to coordination polymers, generated by the Schiff base ligands derived from o-vanillin. Plenty of purely 4f and mixed 3d-4f single-molecule magnets (SMMs) have been synthesized using these ligands aiming at their several futuristic applications ranging from data storage devices to the basic unit of quantum computers. In the present endeavour, we introduced for the first time a new methyl derivative of o-vanillin, 2-hydroxy-3-methoxy-5-methylbenzaldehyde (Me-val), to explore its coordination ability as well as the electronic effect of the methyl substitution at the para position with respect to the phenolic-OH group in the resulting complexes. Consequently, a Dy-4 (1) and a Zn2Dy2 (2) complex have been synthesized and structurally characterized from a ligand, (E)-2-[(2-hydroxyphenyl)iminomethyl]-6-methoxy-4-methylphenol (H2L), derived from Schiff base condensation reaction of Me-val and o-aminophenol. Both complexes are butterfly-shaped structures with varied geometries around the Dy(III) ions, and in 2, the Zn(II) centres occupy the body positions and the Dy(III) ions are in the wing positions. Magnetic studies reveal that complex 1 displays slow magnetic relaxation at zero dc field, while complex 2 exhibits field supported slow magnetic relaxation. Ab initio calculations were further performed to understand the magnetic behaviours in these complexes, which revealed that the counter complementary effect of the ferromagnetic dipole-dipole interaction and the intramolecular antiferromagnetic interaction among the Dy centres overall describe the slow magnetic relaxation behaviours in these complexes.

Název v anglickém jazyce

The first exploration of coordination chemistry using a methyl substituted o-vanillin based ligand: an example starting with Dy-4/Zn2Dy2 systems displaying slow relaxation of magnetization

Popis výsledku anglicky

The literature has witnessed the exceptionally rich coordination chemistry, ranging from monomeric species to coordination polymers, generated by the Schiff base ligands derived from o-vanillin. Plenty of purely 4f and mixed 3d-4f single-molecule magnets (SMMs) have been synthesized using these ligands aiming at their several futuristic applications ranging from data storage devices to the basic unit of quantum computers. In the present endeavour, we introduced for the first time a new methyl derivative of o-vanillin, 2-hydroxy-3-methoxy-5-methylbenzaldehyde (Me-val), to explore its coordination ability as well as the electronic effect of the methyl substitution at the para position with respect to the phenolic-OH group in the resulting complexes. Consequently, a Dy-4 (1) and a Zn2Dy2 (2) complex have been synthesized and structurally characterized from a ligand, (E)-2-[(2-hydroxyphenyl)iminomethyl]-6-methoxy-4-methylphenol (H2L), derived from Schiff base condensation reaction of Me-val and o-aminophenol. Both complexes are butterfly-shaped structures with varied geometries around the Dy(III) ions, and in 2, the Zn(II) centres occupy the body positions and the Dy(III) ions are in the wing positions. Magnetic studies reveal that complex 1 displays slow magnetic relaxation at zero dc field, while complex 2 exhibits field supported slow magnetic relaxation. Ab initio calculations were further performed to understand the magnetic behaviours in these complexes, which revealed that the counter complementary effect of the ferromagnetic dipole-dipole interaction and the intramolecular antiferromagnetic interaction among the Dy centres overall describe the slow magnetic relaxation behaviours in these complexes.

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

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

5627-5637

Kód UT WoS článku

000763441800001

EID výsledku v databázi Scopus

2-s2.0-85128198486