Self-assembled octanuclear [Ni(5)Ln(3)] (Ln = Dy, Tb and Ho) complexes: synthesis, coordination induced ligand hydrolysis, structure and magnetism

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73603259" target="_blank" >RIV/61989592:15310/20:73603259 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlehtml/2020/dt/d0dt01675f" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2020/dt/d0dt01675f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0dt01675f" target="_blank" >10.1039/d0dt01675f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Self-assembled octanuclear [Ni(5)Ln(3)] (Ln = Dy, Tb and Ho) complexes: synthesis, coordination induced ligand hydrolysis, structure and magnetism

Popis výsledku v původním jazyce

The variable coordination behavior of 2-{[(2-hydroxy-3-methoxybenzyl)imino]methyl}-6-methoxyphenol (H2L) and its hydrolyzed congener towards NiCl2 center dot 6H(2)O and Ln(III)nitrate salts provides a family of coordination aggregates containing an [Ni(5)Ln(3)] octanuclear core structure. Room temperature reactions in MeOH-CHCl(3)medium and in the presence of NEt(3)yielded isostructural [Ni(5)Ln(3)(L)(4)(mu-OH)(2)(mu(3)-OH)(6)(o-val)(2)(H2O)(6)]NO3 center dot 7H(2)O (Ln = Dy3+(1), Tb3+(2), and Ho3+(3);o-val =o-vanillin) heterometallic complexes. All the three complexes hold an octanuclear fused partial hexacubane topology from the utilization of phenolate-based ligand anions, clipping five 3d and three 4f ions. Direct current magnetic susceptibility measurements showed an upsurge at low temperature for complexes1and2, indicative of ferromagnetic interactions, while antiferromagnetic exchange interaction predominates for complex3. AC magnetic susceptibility measurements were not able to show any slow relaxation property to the magnetization. CASSCF calculations for complex1indicate that all three Dy(3+)centres have anisotropic axes but the relative orientation of the magnetic axes reduces the probability of this molecule to behave like an SMM which is further established by the POLY_ANISO calculations.

Název v anglickém jazyce

Self-assembled octanuclear [Ni(5)Ln(3)] (Ln = Dy, Tb and Ho) complexes: synthesis, coordination induced ligand hydrolysis, structure and magnetism

Popis výsledku anglicky

The variable coordination behavior of 2-{[(2-hydroxy-3-methoxybenzyl)imino]methyl}-6-methoxyphenol (H2L) and its hydrolyzed congener towards NiCl2 center dot 6H(2)O and Ln(III)nitrate salts provides a family of coordination aggregates containing an [Ni(5)Ln(3)] octanuclear core structure. Room temperature reactions in MeOH-CHCl(3)medium and in the presence of NEt(3)yielded isostructural [Ni(5)Ln(3)(L)(4)(mu-OH)(2)(mu(3)-OH)(6)(o-val)(2)(H2O)(6)]NO3 center dot 7H(2)O (Ln = Dy3+(1), Tb3+(2), and Ho3+(3);o-val =o-vanillin) heterometallic complexes. All the three complexes hold an octanuclear fused partial hexacubane topology from the utilization of phenolate-based ligand anions, clipping five 3d and three 4f ions. Direct current magnetic susceptibility measurements showed an upsurge at low temperature for complexes1and2, indicative of ferromagnetic interactions, while antiferromagnetic exchange interaction predominates for complex3. AC magnetic susceptibility measurements were not able to show any slow relaxation property to the magnetization. CASSCF calculations for complex1indicate that all three Dy(3+)centres have anisotropic axes but the relative orientation of the magnetic axes reduces the probability of this molecule to behave like an SMM which is further established by the POLY_ANISO 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

2020

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

—

Svazek periodika

49

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

7968-7976

Kód UT WoS článku

000542720000033

EID výsledku v databázi Scopus

2-s2.0-85086512429