Heterometallic 3d-4f {Co2Gd4} phosphonates: New members of the potential magnetic cooler family

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F19%3A63523882" target="_blank" >RIV/70883521:28610/19:63523882 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/20:00115185

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2020/NJ/C9NJ05071J#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2020/NJ/C9NJ05071J#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c9nj05071j" target="_blank" >10.1039/c9nj05071j</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heterometallic 3d-4f {Co2Gd4} phosphonates: New members of the potential magnetic cooler family

Popis výsledku v původním jazyce

Three new heterometallic phosphonate complexes with a novel 3d-4f metal core {Co2Gd4} were isolated. The reactions between CoCl2, GdCl3, ligand sodium salts, and 2,2′-bipyridine in methanol solution lead to new unexpected 3d-4f heterometallic complexes, [Na2CoIII2Gd4(L)6(bpy)2(OR)2]·nSolv (L = SAA3- (1), BSAA3- (2), and NAA3- (3); bpy = 2,2′-bipyridine; OR = OH and OMe; Solv = H2O and MeOH), composed of a rare case of two magnetically independent oxygen bridged Gd2O2 dinuclear units, which are separated by O-P-O bridges. According to the BVS calculations and measured magnetic properties, only CoIII ions are present in the obtained complexes. The magnetic properties of the compounds 1-3 were studied and the entropy changes for the designation of the magnetocaloric effect were calculated. The largest value for the magnetic entropy change -ΔSM of 20 J kg-1 K-1 for complex 1 has been found for Tav = 2.25 K and Hf = 5 T.

Název v anglickém jazyce

Heterometallic 3d-4f {Co2Gd4} phosphonates: New members of the potential magnetic cooler family

Popis výsledku anglicky

Three new heterometallic phosphonate complexes with a novel 3d-4f metal core {Co2Gd4} were isolated. The reactions between CoCl2, GdCl3, ligand sodium salts, and 2,2′-bipyridine in methanol solution lead to new unexpected 3d-4f heterometallic complexes, [Na2CoIII2Gd4(L)6(bpy)2(OR)2]·nSolv (L = SAA3- (1), BSAA3- (2), and NAA3- (3); bpy = 2,2′-bipyridine; OR = OH and OMe; Solv = H2O and MeOH), composed of a rare case of two magnetically independent oxygen bridged Gd2O2 dinuclear units, which are separated by O-P-O bridges. According to the BVS calculations and measured magnetic properties, only CoIII ions are present in the obtained complexes. The magnetic properties of the compounds 1-3 were studied and the entropy changes for the designation of the magnetocaloric effect were calculated. The largest value for the magnetic entropy change -ΔSM of 20 J kg-1 K-1 for complex 1 has been found for Tav = 2.25 K and Hf = 5 T.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

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

—

Svazek periodika

44

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

513-521

Kód UT WoS článku

000504433000026

EID výsledku v databázi Scopus

2-s2.0-85077434475