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

J 2020

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

DOROSHENKO, Iaroslav, Axel BUCHHOLZ, Eva Domincova BERGEROVA, Winfried PLASS, Jiří PINKAS et. al.

Basic information

Original name

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

Authors

DOROSHENKO, Iaroslav (804 Ukraine, belonging to the institution), Axel BUCHHOLZ (276 Germany), Eva Domincova BERGEROVA (203 Czech Republic), Winfried PLASS (276 Germany) and Jiří PINKAS (203 Czech Republic, guarantor, belonging to the institution)

Edition

New Journal of Chemistry, Cambridge, ROYAL SOC. CHEMISTRY, 2020, 1144-0546

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10400 1.4 Chemical sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 3.591

RIV identification code

RIV/00216224:14310/20:00115185

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1039/c9nj05071j

UT WoS

000504433000026

Keywords in English

TRANSITION-METAL-COMPLEXES; CLUSTERS; CAGES; GD; SYMMETRY; SHAPE; LANTHANIDES; DESIGN; LN

Abstract

V originále

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.

Links

LM2015043, research and development project

Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)

Investor: Ministry of Education, Youth and Sports of the CR

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

DOROSHENKO, Iaroslav, Axel BUCHHOLZ, Eva Domincova BERGEROVA, Winfried PLASS and Jiří PINKAS. Heterometallic 3d-4f {Co2Gd4} phosphonates: new members of the potential magnetic cooler family. New Journal of Chemistry. Cambridge: ROYAL SOC. CHEMISTRY, 2020, vol. 44, No 2, p. 513-521. ISSN 1144-0546. Available from: https://dx.doi.org/10.1039/c9nj05071j.

@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 and 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, vol.~44, No~2, p.~513-521. ISSN~1144-0546. Available from: https://dx.doi.org/10.1039/c9nj05071j.

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