Issue 1, 2019

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

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

Supplementary files

Article information

Article type
Research Article
Submitted
26 Jul 2018
Accepted
17 Sep 2018
First published
18 Sep 2018

Inorg. Chem. Front., 2019,6, 40-49

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., 2019, 6, 40 DOI: 10.1039/C8QI00772A

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