Crystal structures and magnetic properties of two series of phenoxo-O bridged dinuclear Ln(2) (Ln = Gd, Tb, Dy) complexes

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Crystal structures and magnetic properties of two series of phenoxo-O bridged dinuclear Ln(2) (Ln = Gd, Tb, Dy) complexes

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/LO1305" target="_blank" >LO1305: Development of the center of advanced technologies and materials</a><br>

Continuities

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

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Dalton Transactions (print)

ISSN

1477-9226

e-ISSN

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Volume of the periodical

2017

Issue of the periodical within the volume

46

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

16294-16305

UT code for WoS article

000416427400038

EID of the result in the Scopus database

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