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Solvent orientation in the crystal lattice producing distinct magnetic dynamics in two binuclear Dy(III) polymorphs with a polydentate Schiff base ligand

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Abstract

Two Dy(III) polymorphs, [Dy(Clapi)]2·(CH2Cl2)2 (H3Clapi = 2-(2′-hydroxy-5′-chlorophenyl)-1,3-bis[3′-aza-4′-(2′′-hydroxy-5′′-chlorophenyl)prop-4′-en-1′-yl]-1,3-imidazolidine), have been obtained, crystallizing in space groups P21/c (1a) and C2/c (1b), respectively. Both 1a and 1b have an identical eight-coordinated Dy(III) configuration with D4d symmetry; their only difference is the lattice orientation of the solvent molecule CH2Cl2. Alternating current (ac) magnetic susceptibility measurements reveal that they exhibit distinct magnetic behaviours. Theoretical calculations indicate that the exchange interactions play a vital role in the magnetic behavior of the polymorphs. This work presents a rational model to explore the magneto-structural relationship in both experimental and theoretical aspects of Dy(III) single-molecule magnets.

Graphical abstract: Solvent orientation in the crystal lattice producing distinct magnetic dynamics in two binuclear Dy(iii) polymorphs with a polydentate Schiff base ligand

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Publication details

The article was received on 11 Jul 2017, accepted on 28 Aug 2017 and first published on 14 Sep 2017


Article type: Paper
DOI: 10.1039/C7CE01269A
Citation: CrystEngComm, 2017, Advance Article
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    Solvent orientation in the crystal lattice producing distinct magnetic dynamics in two binuclear Dy(III) polymorphs with a polydentate Schiff base ligand

    Z. Jiang, L. Sun, Q. Yang, S. Wei, H. Ke, S. Chen, Y. Zhang, Q. Wei and G. Xie, CrystEngComm, 2017, Advance Article , DOI: 10.1039/C7CE01269A

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