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Dinuclear lanthanide–lithium complexes based on fluorinated β-diketonate with acetal group: magnetism and effect of crystal packing on mechanoluminescence

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Abstract

The synthesis of novel dinuclear lanthanide complexes with formulas [(LnL3)(LiL)(MeOH)] (1–3) and [(LnL3)(LiL)(H2O)] (4–6) (Ln = Eu(III), Tb(III), Dy(III)) based on functionalized lithium β-diketonate (LiL) is reported. The coordination environment of the Ln(III) ion is formed by oxygen atoms of both the 1,3-dicarbonyl moiety and the acetal group. Depending on the solvent used for the crystallization, methanol or water molecules participate in the coordination with Li(I) ions affecting the crystal structure of complexes. In contrast to [(LnL3)(LiL)(H2O)] 4–6, a series of complexes [(LnL3)(LiL)(MeOH)] 1–3 showed mechanoluminescence properties, thereby demonstrating the relationship between the observed optical properties and crystal packing architecture. The magnetic measurements of [(LnL3)(LiL)(MeOH)] 1–3 revealed SMM behavior of [(DyL3)(LiL)(MeOH)] 3 at low temperatures (Ueff is 37.7 cm−1).

Graphical abstract: Dinuclear lanthanide–lithium complexes based on fluorinated β-diketonate with acetal group: magnetism and effect of crystal packing on mechanoluminescence

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Publication details

The article was received on 26 Jul 2018, accepted on 17 Sep 2018 and first published on 18 Sep 2018


Article type: Research Article
DOI: 10.1039/C8QI00772A
Citation: Inorg. Chem. Front., 2018, Advance Article
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    Dinuclear lanthanide–lithium complexes based on fluorinated β-diketonate with acetal group: magnetism and effect of crystal packing on mechanoluminescence

    D. N. Bazhin, Y. S. Kudyakova, A. S. Bogomyakov, P. A. Slepukhin, G. A. Kim, Y. V. Burgart and V. I. Saloutin, Inorg. Chem. Front., 2018, Advance Article , DOI: 10.1039/C8QI00772A

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