Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer

Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer

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 dis...

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Main Authors: Yan Peng, Valeriu Mereacre, Christopher E. Anson, Annie K. Powell
Format: Article
Language:English
Published: MDPI AG 2016-01-01
Series:Inorganics
Subjects:
hydrazone Schiff base
Dy dimer
hula-hoop
single molecule magnets
Online Access:http://www.mdpi.com/2304-6740/4/1/2
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spelling doaj-dadbd90e50eb4bd8b1a68d5425592be02020-11-24T23:50:09ZengMDPI AGInorganics2304-67402016-01-0141210.3390/inorganics4010002inorganics4010002Tuning of Hula-Hoop Coordination Geometry in a Dy DimerYan Peng0Valeriu Mereacre1Christopher E. Anson2Annie K. Powell3Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe, GermanyInstitute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe, GermanyInstitute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe, GermanyInstitute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe, GermanyThe 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.http://www.mdpi.com/2304-6740/4/1/2hydrazone Schiff baseDy dimerhula-hoopsingle molecule magnets
collection DOAJ
language English
format Article
sources DOAJ
author Yan Peng
Valeriu Mereacre
Christopher E. Anson
Annie K. Powell
spellingShingle Yan Peng
Valeriu Mereacre
Christopher E. Anson
Annie K. Powell
Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
Inorganics
hydrazone Schiff base
Dy dimer
hula-hoop
single molecule magnets
author_facet Yan Peng
Valeriu Mereacre
Christopher E. Anson
Annie K. Powell
author_sort Yan Peng
title Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
title_short Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
title_full Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
title_fullStr Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
title_full_unstemmed Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
title_sort tuning of hula-hoop coordination geometry in a dy dimer
publisher MDPI AG
series Inorganics
issn 2304-6740
publishDate 2016-01-01
description 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.
topic hydrazone Schiff base
Dy dimer
hula-hoop
single molecule magnets
url http://www.mdpi.com/2304-6740/4/1/2
work_keys_str_mv AT yanpeng tuningofhulahoopcoordinationgeometryinadydimer
AT valeriumereacre tuningofhulahoopcoordinationgeometryinadydimer
AT christophereanson tuningofhulahoopcoordinationgeometryinadydimer
AT anniekpowell tuningofhulahoopcoordinationgeometryinadydimer
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