Jump to main content
Jump to site search


Zn2Ln2 complexes with carbonate bridges formed by fixation of carbon dioxide in the atmosphere: single-molecule magnet behaviour and magnetocaloric effect

Abstract

Three novel isotructural Zn2Ln2 cluster complexes with carbonate bridging ligands, {Zn2Ln2(μ3-CO3)2L2(acacF6)2}•CH3OH [H2L = N,N’-dimethyl-N,N’-(2-hydroxy-3-methoxy-5-methyl-benzyl)ethylenediamine; HacacF6 = hexafluoroacetylacetone; Ln = Dy, 1; Ln = Gd, 2; Ln = Eu, 3] have been prepared by fixing the carbon dioxide in the atmosphere. Such carbonate bridging ligands may mediate ferromagnetic exchange between Ln3+ ions. The Zn2Dy2 compound (1) diplays the properties of a single molecule magnet (SMM), showing slow magnetic relaxation at 1500 Oe dc field, with an obvious larger Ueff/k value (83 K) with respect to other carbonate-bridged Zn2Dy2 SMMs (≤ 34 K) and ZnDy dinuclear SMMs derived from the same ligand H2L used in this work (≤ 36.5 K); while the Zn2Gd2 compound (2) shows a moderate magnetocaloric effect and can be looked as a potential molecular material for low temperature magnetic refrigeration.

Back to tab navigation

Supplementary files

Article information


Submitted
21 Nov 2019
Accepted
15 Jan 2020
First published
15 Jan 2020

Dalton Trans., 2020, Accepted Manuscript
Article type
Paper

Zn2Ln2 complexes with carbonate bridges formed by fixation of carbon dioxide in the atmosphere: single-molecule magnet behaviour and magnetocaloric effect

C. Liu, D. Zhang, X. Hao and D. Zhu, Dalton Trans., 2020, Accepted Manuscript , DOI: 10.1039/C9DT04480A

Social activity

Search articles by author

Spotlight

Advertisements