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Three angular Zn2Dy complexes showing the effect of remote coordination at Zn and counter ions on slow magnetic relaxation at Dy centres
ID
Panja, Anangamohan
(
Author
),
ID
Jagličić, Zvonko
(
Author
),
ID
Herchel, Radovan
(
Author
),
ID
Brandão, Paula
(
Author
),
ID
Pramanik, Kuheli
(
Author
),
ID
Jana, Narayan Ch.
(
Author
)
URL - Source URL, Visit
https://pubs.rsc.org/en/content/articlelanding/2022/NJ/D2NJ01759H
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Abstract
Three new angular trinuclear Zn2Dy complexes, [Dy{Zn(L)Cl}2(H2O)2]Cl3H2O (1), [Dy{Zn(L)Br}2(H2O)2](NO3) 6H2O (2) and [Dy{Zn(L)I}2(H2O)2](NO3)6H2O (3), derived from a methyl substituted o-vanillin based Schiff base ligand, N,N0 -bis(3-methoxy-5-methylsalicylidene)-1,2-phenylenediamine (H2L), have been synthesized and magneto-structurally characterised. In the complex cations in 1–3, the coordination environments of the Dy(III) ions are identical, but the apical coordination to the Zn(II) ion is different as it is bonded to different halide ions. Magnetic studies reveal that both 2 and 3 display field-supported slow magnetic relaxation, consistent with the isomorphic nature of the compounds, while 1 exhibits more pronounced singlemolecule magnetic behaviour. The direct fitting of the experimental data as well as the analysis with CASSCF calculations and SINGLE_ANISO module reveals a variation in magnetic anisotropy within the series and the presence of weak antiferromagnetic intermolecular interactions. Therefore, the present report highlights the influence of remote coordination at Zn and counter ions on magnetic anisotropy and on intermolecular antiferromagnetic dipolar interactions, leading to distinct magnetic dynamics in these systems.
Language:
English
Keywords:
molekularni magnetizem
,
Zn2Dy complexes
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FGG - Faculty of Civil and Geodetic Engineering
FMF - Faculty of Mathematics and Physics
Publication date:
01.01.2022
Year:
2022
Number of pages:
Str. 13546-13557
Numbering:
Vol. 46, iss. 28, art. 13546
PID:
20.500.12556/RUL-146426
UDC:
544
ISSN on article:
1369-9261
DOI:
10.1039/d2nj01759h
COBISS.SI-ID:
143373315
Publication date in RUL:
31.05.2023
Views:
334
Downloads:
18
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Record is a part of a journal
Title:
New journal of chemistry
Shortened title:
New j. chem.
Publisher:
Royal Society of Chemistry
ISSN:
1369-9261
COBISS.SI-ID:
22573573
Secondary language
Language:
Slovenian
Keywords:
molekularni magnetizem
,
kompleks Zn2Dy
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0348
Name:
Nove slikovno-analitske metode
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