New cyanido-bridged heterometallic 3d-4f 1D coordination polymers: Synthesis, crystal structures and magnetic properties
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DRAGANCEA, Diana; NOVITKI, Ghenadie; MADALAN, Augustin M.; ANDRUH, Marius. New cyanido-bridged heterometallic 3d-4f 1D coordination polymers: Synthesis, crystal structures and magnetic properties. In: Magnetochemistry. 2021, nr. 5(7), pp. 1-14. ISSN 2312-7481.
10.3390/magnetochemistry7050057
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Magnetochemistry
Numărul 5(7) / 2021 / ISSN 2312-7481

New cyanido-bridged heterometallic 3d-4f 1D coordination polymers: Synthesis, crystal structures and magnetic properties

DOI: https://doi.org/10.3390/magnetochemistry7050057

Pag. 1-14

Dragancea Diana12, Novitki Ghenadie3, Madalan Augustin M.1, Andruh Marius1
 
1 University of Bucharest,
2 Institute of Chemistry,
3 French National Centre for Scientific Research, Grenoble
 
Disponibil în IBN: 8 iunie 2021


Rezumat

Three new 1D cyanido-bridged 3d-4f coordination polymers, {[Gd(L)(H2O)2Fe(CN)6]·H2O}n (1GdFe), {[Dy(L)(H2O)2Fe(CN)63H2O}n (2DyFe), and {[Dy(L)(H2O)2Co(CN)6]·H2O}n (3DyCo), were assembled following the building-block approach (L = pentadentate bis-semicarbazone ligand resulting from the condensation reaction between 2,6-diacetyl-pyridine and semicarbazide). The crystal structures consist of crenel-like LnIII-MIII alternate chains, with the LnIII ions connected by the hexacyanido metalloligands through two cis cyanido groups. The magnetic properties of the three complexes have been investigated. Field-induced slow relaxation of the magnetization was observed for compounds 2DyFe and 3DyCo. Compound 3DyCo is a new example of chain of Single Ion Magnets. 

Cuvinte-cheie
coordination polymers, Cyanido-bridged complexes, heterometallic complexes, lanthanides, Single molecule magnets