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First examples of polynuclear lanthanide diethylene glycol based coordination clusters

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posted on 2023-06-09, 05:35 authored by Guo Peng, Ying-Ying Zhang, Zhao-Yang Li, George KostakisGeorge Kostakis
Five lanthanide coordination clusters (CCs) [Ln7(µ3-OH)4(deg)2(Hdeg)2(ben)11]·xCH3CN [Ln=Eu (1), Gd (2), Tb (3), Dy (4), Ho (5); H2deg=diethylene glycol, Hben=benzoic acid, x=7 for 1-4 and 6 for 5] with diethylene glycol and benzoic acid as ligands have been prepared and structurally characterized. All CCs consist of a heptanuclear lanthanide core with a scarce tip-sharing double-butterfly topology. Magnetic measurements revealed that CC 4 exhibits slow magnetic relaxation with an energy barrier of about 6K, whereas CC 3 shows outstanding magnetocaloric effect with entropy change of 34.6 J Kg-1 K-1 at 2K and ?H=7T. The photoluminescent properties of CCs 1, 3 and 4 were also investigated, displaying intense characteristic emission spectra of EuIII, TbIII and DyIII ions.

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Publication status

  • Published

File Version

  • Accepted version

Journal

European Journal of Inorganic Chemistry

ISSN

1434-1948

Publisher

Wiley-VCH Verlag

Issue

20

Volume

2017

Page range

2700-2706

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-03-30

First Open Access (FOA) Date

2018-05-27

First Compliant Deposit (FCD) Date

2017-03-30

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