Hydroxido supported and differently networked octanuclear Ni(6)Ln(2) [Ln = Gd-III and Dy-III] complexes: structural variation, magnetic properties and theoretical insights

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU140704" target="_blank" >RIV/00216305:26620/21:PU140704 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/21:73609425

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2021/dt/d0dt04168h#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/dt/d0dt04168h#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0dt04168h" target="_blank" >10.1039/d0dt04168h</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydroxido supported and differently networked octanuclear Ni(6)Ln(2) [Ln = Gd-III and Dy-III] complexes: structural variation, magnetic properties and theoretical insights

Popis výsledku v původním jazyce

The design and synthesis of a Schiff base H2L, (2-{[(2-hydroxy-3-methoxybenzyl)imino]methyl)phenol), bearing an ONOO donor set has been explored for its reactivity pattern with LnCl(3)center dot 6H(2)O (Ln = Gd-III and Dy-III) and Ni(CH3CO2)(2)center dot 4H(2)O in the presence of NEt3 for molecular aggregation. Coordination driven spontaneous self-assembly reactions provide (Gd2Ni6L4(mu(3)-OH)(6)(mu-OH)(2)(CH3CO2)(2)(mu-H2O)(2)(H2O)(3)(MeOH)]center dot 8H(2)O (1) having a 'butterfly-shaped' core and [Dy2Ni6L4(mu(3)-OH)(4)(mu-Cl)(2)Cl-4(H2O)(2)(MeOH)(2)]center dot 2MeOH center dot 4H(2)O (2) with a 'candy-shaped' core. Fusion of six partial cubane units led to a mineral-like core in 1, developed around the central Ni-2(OH)(2) moiety, whereas in the case of 2, four such partial cubanes collapsed on Dy-2(OH)(2). Direct-current (dc) magnetic susceptibility measurements revealed that predominant ferromagnetic interactions lead to a high-spin S = 13 ground state for 1. Complex 2 exhibits slow relaxation of magnetization under an applied small dc field with an energy barrier to reorientation of the magnetization, U-eff = 19.3 K. The static and dynamic magnetic data are analysed and corroborated by density functional theory (DFT) and detailed CASSCF based calculations.

Název v anglickém jazyce

Hydroxido supported and differently networked octanuclear Ni(6)Ln(2) [Ln = Gd-III and Dy-III] complexes: structural variation, magnetic properties and theoretical insights

Popis výsledku anglicky

The design and synthesis of a Schiff base H2L, (2-{[(2-hydroxy-3-methoxybenzyl)imino]methyl)phenol), bearing an ONOO donor set has been explored for its reactivity pattern with LnCl(3)center dot 6H(2)O (Ln = Gd-III and Dy-III) and Ni(CH3CO2)(2)center dot 4H(2)O in the presence of NEt3 for molecular aggregation. Coordination driven spontaneous self-assembly reactions provide (Gd2Ni6L4(mu(3)-OH)(6)(mu-OH)(2)(CH3CO2)(2)(mu-H2O)(2)(H2O)(3)(MeOH)]center dot 8H(2)O (1) having a 'butterfly-shaped' core and [Dy2Ni6L4(mu(3)-OH)(4)(mu-Cl)(2)Cl-4(H2O)(2)(MeOH)(2)]center dot 2MeOH center dot 4H(2)O (2) with a 'candy-shaped' core. Fusion of six partial cubane units led to a mineral-like core in 1, developed around the central Ni-2(OH)(2) moiety, whereas in the case of 2, four such partial cubanes collapsed on Dy-2(OH)(2). Direct-current (dc) magnetic susceptibility measurements revealed that predominant ferromagnetic interactions lead to a high-spin S = 13 ground state for 1. Complex 2 exhibits slow relaxation of magnetization under an applied small dc field with an energy barrier to reorientation of the magnetization, U-eff = 19.3 K. The static and dynamic magnetic data are analysed and corroborated by density functional theory (DFT) and detailed CASSCF based calculations.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/LTAUSA19060" target="_blank" >LTAUSA19060: Spektroskopie jednomolekulárních magnetů pomocí grafenových bolometrů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

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

50

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

5023-5035

Kód UT WoS článku

000633045300001

EID výsledku v databázi Scopus

2-s2.0-85104266374