Structural switching from paramagnetic to single-molecule magnet behaviour of LnZn2 trinuclear complexes

Poh Ling Then, Chika Takehara, Yumiko Kataoka, Motohiro Nakano, Tomoo Yamamura, Takashi Kajiwara

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Five LnZn2 trinuclear complexes, [Ln(NO3){Zn(L)(SCN)}2] (H2L is a Schiff base ligand derived from o-vanillin and ethylenediamine; Ln = Tb 1, Dy 2, La 3, Tb0.14La0.864, and Dy0.21La0.795), were synthesised in which the ZnII-LnIII-ZnII array exhibits two slightly different arrangements: 1 and 2 exhibited slightly bent arrangements, whereas 3-5 exhibited more linear arrangements. These differences in the arrangements lead to a slightly different coordination geometry around LnIII. From the detailed studies of dynamic susceptibility, 1 and 2 were found to be paramagnetic, whereas 4 and 5 were SMMs with barriers for the flipping of magnetisation with a height of 41.2(4) K and 156(4) K, respectively.

Original languageEnglish
Pages (from-to)18038-18048
Number of pages11
JournalDalton Transactions
Volume44
Issue number41
DOIs
Publication statusPublished - 2015

ASJC Scopus subject areas

  • Inorganic Chemistry

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