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

Dragancea Diana; Novitsky Ghenadie; Madalan Augustin M.; Andruh Marius

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DRAGANCEA, Diana, NOVITSKY, 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. DOI: https://doi.org/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, Novitsky 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 (1_GdFe), {[Dy(L)(H₂O)₂Fe(CN)₆]·₃H₂O}_n (₂DyFe), and {[Dy(L)(H₂O)₂Co(CN)₆]·H₂O}_n (3_DyCo), 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 Ln^III-M^III alternate chains, with the Ln^III 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 2_DyFe and 3_DyCo. 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

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