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Three Dy(III) single-ion magnets bearing tropolone ligand: structure, magnetic property and theoretical elucidation

Abstract

The reactions of Dysprosium nitrate with the main ligand of tropolone (HL) in the presence of ancillary ligands of phenanthroline (phen) or 1,3,5-benzenetricarboxylic acid (H3BTC) gave three mononuclear complexes [Dy(phen)2(L)(NO3)2] (1), [Dy(phen)(L)3]∙H2O (2) and [Dy(H3BTC)(H2O)(L)3]2∙3H2O (3). They present different sets of mixed ligands. The Dy(III) ions are ten-coordinated to build a bicapped square anti-prismatic geometry for complex 1 and eight-coordinated in dodecahedral geometries for complexes 2 and 3. Their magnetic properties were investigated in detail. Complexes 1 and 2 are single ion magnets under external field, and complex 3 is a single ion magnet under zero field. They are the first single ion magnets bearing the ligands with the coordinating groups fused on a seven-membered ring. It revealed a tuning effect on the performances of single ion magnets by ancillary ligands. These experimental magnetic behaviours are supported by the results from ab intio calculations, including g-tensors, averaged transition magnetic moment, magnetic easy axes, and crystal field parameters.

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Publication details

The article was received on 26 Jan 2019, accepted on 08 Apr 2019 and first published on 10 Apr 2019


Article type: Paper
DOI: 10.1039/C9DT00364A
Citation: Dalton Trans., 2019, Accepted Manuscript

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    Three Dy(III) single-ion magnets bearing tropolone ligand: structure, magnetic property and theoretical elucidation

    Z. Chen, S. Yu, R. Wang, B. Li, B. Yin, D. Liu, Y. Liang, D. Yao and F. Liang, Dalton Trans., 2019, Accepted Manuscript , DOI: 10.1039/C9DT00364A

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