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Inorganics 2016, 4(1), 2;

Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer

Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe, Germany
Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021 Karlsruhe, Germany
Author to whom correspondence should be addressed.
Academic Editors: Stephen Mansell and Steve Liddle
Received: 18 September 2015 / Revised: 22 December 2015 / Accepted: 31 December 2015 / Published: 8 January 2016
(This article belongs to the Special Issue Rare Earth and Actinide Complexes)
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The reaction of DyCl3 with hydrazone Schiff base ligands and sodium acetate in the presence of triethylamine (Et3N) as base affords two dysprosium dimers: [Dy2(HL1)2(OAc)2(EtOH)(MeOH)] (1) and [Dy2(L2)2(OAc)2(H2O)2]·2MeOH (2). The DyIII ions in complexes 1 and 2 are linked by alkoxo bridges, and display “hula hoop” coordination geometries. Consequently, these two compounds show distinct magnetic properties. Complex 1 behaves as a field-induced single molecule magnet (SMM), while typical SMM behavior was observed for complex 2. In addition, comparison of the structural parameters among similar Dy2 SMMs with hula hoop-like geometry reveals the significant role played by coordination geometry and magnetic interaction in modulating the relaxation dynamics of SMMs. View Full-Text
Keywords: hydrazone Schiff base; Dy dimer; hula-hoop; single molecule magnets hydrazone Schiff base; Dy dimer; hula-hoop; single molecule magnets

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Peng, Y.; Mereacre, V.; Anson, C.E.; Powell, A.K. Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer. Inorganics 2016, 4, 2.

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