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@article{1602442,
author = {Doroshenko, Iaroslav and Buchholz, Axel and Bergerova, Eva Domincova and Plass, Winfried and Pinkas, Jiří},
article_location = {Cambridge},
article_number = {2},
doi = {http://dx.doi.org/10.1039/c9nj05071j},
keywords = {TRANSITION-METAL-COMPLEXES; CLUSTERS; CAGES; GD; SYMMETRY; SHAPE; LANTHANIDES; DESIGN; LN},
language = {eng},
issn = {1144-0546},
journal = {New Journal of Chemistry},
title = {Heterometallic 3d-4f {Co2Gd4} phosphonates: new members of the potential magnetic cooler family},
url = {http://dx.doi.org/10.1039/c9nj05071j},
volume = {44},
year = {2020}
}
TY - JOUR
ID - 1602442
AU - Doroshenko, Iaroslav - Buchholz, Axel - Bergerova, Eva Domincova - Plass, Winfried - Pinkas, Jiří
PY - 2020
TI - Heterometallic 3d-4f {Co2Gd4} phosphonates: new members of the potential magnetic cooler family
JF - New Journal of Chemistry
VL - 44
IS - 2
SP - 513-521
EP - 513-521
PB - ROYAL SOC. CHEMISTRY
SN - 11440546
KW - TRANSITION-METAL-COMPLEXES
KW - CLUSTERS
KW - CAGES
KW - GD
KW - SYMMETRY
KW - SHAPE
KW - LANTHANIDES
KW - DESIGN
KW - LN
UR - http://dx.doi.org/10.1039/c9nj05071j
L2 - http://dx.doi.org/10.1039/c9nj05071j
N2 - 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, [Na(2)CoIII2Gd(4)(L)(6)(bpy)(2)(OR)(2)]center dot nSolv (L = SAA(3-) (1), BSAA(3-) (2), and NAA(3-) (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 Co-III 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 -Delta S-M of 20 J kg(-1) K-1 for complex 1 has been found for T-av = 2.25 K and H-f = 5 T.
ER -
DOROSHENKO, Iaroslav, Axel BUCHHOLZ, Eva Domincova BERGEROVA, Winfried PLASS a Jiří PINKAS. Heterometallic 3d-4f $\{$Co2Gd4$\}$ phosphonates: new members of the potential magnetic cooler family. \textit{New Journal of Chemistry}. Cambridge: ROYAL SOC. CHEMISTRY, 2020, roč.~44, č.~2, s.~513-521. ISSN~1144-0546. Dostupné z: https://dx.doi.org/10.1039/c9nj05071j.
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