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Issue 41, 2015
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Slow magnetic relaxation of light lanthanide-based linear LnZn2 trinuclear complexes

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Abstract

Four isostructural LnZn2 trinuclear complexes, [Ln(NO3){Zn(L)(SCN)}2] (H2L is a Schiff base ligand derived from o-vanillin and ethylenediamine), were synthesized, which include light lanthanide ions as spin carriers (Ln = Ce 1, Pr 2, Nd 3, and Sm 4). These complexes involve a linear Zn(II)–Ln(III)–Zn(II) array, which leads to an axially stressed ligand field and can also cause single-moleluce magnet (SMM) behavior in oblate-type electronic distributions of ground sublevels found in Ce(III), Pr(III), and Nd(III). Slow magnetic relaxation behavior was observed in 1 and 3 under an applied bias dc field of 1000 Oe, whereas such a slow relaxation was not observed in 2 and 4. The appearance of field-induced SMM behavior in 1 and 3 was correlated with the even-numbered Jz sublevels of Ce(III) and Nd(III) ions known as the Kramers system.

Graphical abstract: Slow magnetic relaxation of light lanthanide-based linear LnZn2 trinuclear complexes

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The article was received on 19 Aug 2015, accepted on 19 Sep 2015 and first published on 23 Sep 2015


Article type: Paper
DOI: 10.1039/C5DT03148F
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Citation: Dalton Trans., 2015,44, 18276-18283

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    Slow magnetic relaxation of light lanthanide-based linear LnZn2 trinuclear complexes

    C. Takehara, P. L. Then, Y. Kataoka, M. Nakano, T. Yamamura and T. Kajiwara, Dalton Trans., 2015, 44, 18276
    DOI: 10.1039/C5DT03148F

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