Crystal structures and magnetic properties of two series of phenoxo-O bridged dinuclear Ln(2) (Ln = Gd, Tb, Dy) complexes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73583681" target="_blank" >RIV/61989592:15310/17:73583681 - isvavai.cz</a>
Výsledek na webu
<a href="http://pubs.rsc.org/en/content/articlepdf/2017/dt/c7dt03441e" target="_blank" >http://pubs.rsc.org/en/content/articlepdf/2017/dt/c7dt03441e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c7dt03441e" target="_blank" >10.1039/c7dt03441e</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Crystal structures and magnetic properties of two series of phenoxo-O bridged dinuclear Ln(2) (Ln = Gd, Tb, Dy) complexes
Popis výsledku v původním jazyce
Six dinuclear lanthanide compounds of the formulae [Ln(2)(3m-L4)(2)(L2)(2)(MeOH)(2)]center dot 6MeOH (Ln = Gd - 1a, Tb - 1b, and Dy - 1c) and [Ln(2)(3m-L4)(2)(L2)(2)(DMF)(2)] (Ln = Gd - 2a, Tb - 2b, and Dy - 2c; DMF = N,N-dimethylformamide, H(2)3m-L4 = (2-[(E)-(3-metoxysalicylidene)amino]phenol), and HL2 = 1,3-diphenyl-1,3-diketopropane) were prepared and characterized by elemental analysis, FTIR spectroscopy, thermogravimetric measurements, single-crystal X-ray structural analysis, and magnetometry, and Gd-2 and Dy-2 compounds by ab initio methods as well. The structural analysis revealed the isostructurallity of the compounds within the series of 1-ac and 2-ac. The analysis of the variable temperature magnetic data showed the presence of a weak antiferromagnetic coupling in the Gd-2 compounds (J/cm(-1) = -0.13 for 1a and J/cm(-1) = -0.17 for 2a). The magnetocaloric effect was studied on compound 2a with the maximum value of -Delta S-M = 22.9 J kg(-1) K-1 at T = 2.0 K and B = 9 T, which is the highest value among the Gd-2 double phenoxo-bridged compounds observed up to now. Both the Dy-2 compounds (1c and 2c) exhibit slow-relaxation of magnetization in zero external static magnetic field. Magnetic anisotropy, intradimer magnetic coupling and magnetization blocking barriers were also studied by ab initio methods for 1c and 2c.
Název v anglickém jazyce
Crystal structures and magnetic properties of two series of phenoxo-O bridged dinuclear Ln(2) (Ln = Gd, Tb, Dy) complexes
Popis výsledku anglicky
Six dinuclear lanthanide compounds of the formulae [Ln(2)(3m-L4)(2)(L2)(2)(MeOH)(2)]center dot 6MeOH (Ln = Gd - 1a, Tb - 1b, and Dy - 1c) and [Ln(2)(3m-L4)(2)(L2)(2)(DMF)(2)] (Ln = Gd - 2a, Tb - 2b, and Dy - 2c; DMF = N,N-dimethylformamide, H(2)3m-L4 = (2-[(E)-(3-metoxysalicylidene)amino]phenol), and HL2 = 1,3-diphenyl-1,3-diketopropane) were prepared and characterized by elemental analysis, FTIR spectroscopy, thermogravimetric measurements, single-crystal X-ray structural analysis, and magnetometry, and Gd-2 and Dy-2 compounds by ab initio methods as well. The structural analysis revealed the isostructurallity of the compounds within the series of 1-ac and 2-ac. The analysis of the variable temperature magnetic data showed the presence of a weak antiferromagnetic coupling in the Gd-2 compounds (J/cm(-1) = -0.13 for 1a and J/cm(-1) = -0.17 for 2a). The magnetocaloric effect was studied on compound 2a with the maximum value of -Delta S-M = 22.9 J kg(-1) K-1 at T = 2.0 K and B = 9 T, which is the highest value among the Gd-2 double phenoxo-bridged compounds observed up to now. Both the Dy-2 compounds (1c and 2c) exhibit slow-relaxation of magnetization in zero external static magnetic field. Magnetic anisotropy, intradimer magnetic coupling and magnetization blocking barriers were also studied by ab initio methods for 1c and 2c.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10402 - Inorganic and nuclear chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/LO1305" target="_blank" >LO1305: Rozvoj centra pokročilých technologií a materiálů</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Dalton Transactions (print)
ISSN
1477-9226
e-ISSN
—
Svazek periodika
2017
Číslo periodika v rámci svazku
46
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
12
Strana od-do
16294-16305
Kód UT WoS článku
000416427400038
EID výsledku v databázi Scopus
—