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Magnetic relaxation in dysprosium and terbium 1D-zigzag coordination chains having only 4,4′-bipyridine as connector.

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Title: Magnetic relaxation in dysprosium and terbium 1D-zigzag coordination chains having only 4,4′-bipyridine as connector.
Authors: Bellucci, Luca1 (AUTHOR), Labella, Luca1 (AUTHOR) luca.labella@unipi.it, Marchetti, Fabio1 (AUTHOR), Pineider, Francesco1 (AUTHOR), Poneti, Giordano1,2 (AUTHOR) gponeti@iq.ufrj.br, Samaritani, Simona1 (AUTHOR)
Source: Inorganica Chimica Acta. Feb2021, Vol. 516, pN.PAG-N.PAG. 1p.
Subjects: Magnetic relaxation, Terbium, Dysprosium, Coordination polymers, Magnetic properties, Magnetic fields
Abstract: • High yield synthesis of lanthanide 1D-zigzag coordination polymers. • Zero field magnetization dynamics for the dysprosium derivative. • Two different relaxation processes for the dysprosium/yttrium system. • Each magnetic relaxation process compatible with a mixed Raman/Direct mechanism. The coordination chain {[Dy(dbm) 3 bpy]·C 7 H 8 } n (1) having only 4,4′-bipyridine as connector has been prepared in high yield and its structural and magnetic properties have been investigated. It is isostructural with the terbium analogue {[Tb(dbm) 3 bpy]·C 7 H 8 } n (2) and features units repeating in a 1D-zigzag fashion, where the metal is octa-coordinated in a distorted square antiprism geometry. Despite the 1D structure, the absence of paramagnetic connectors prevents the direct magnetic intrachain interaction among the lanthanide ions. In zero magnetic field, only a small fraction of the magnetization of 1 displayed slow dynamics with no dependence on temperature. Upon application of a 1 kOe magnetic field, a relaxation process appears, compatible with a mixed Raman/Direct mechanisms. Magnetic dilution in the diamagnetic Y(III)-based analogue revealed that actually two distinct relaxation processes are active for 1 , whose temperature dependence can be interpreted again with a mixed Raman/Direct relaxation model. Compound 2 displayed only in-field slow relaxation, compatible with the models employed for 1. [ABSTRACT FROM AUTHOR]
Copyright of Inorganica Chimica Acta is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 147813339
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  Label: Title
  Group: Ti
  Data: Magnetic relaxation in dysprosium and terbium 1D-zigzag coordination chains having only 4,4′-bipyridine as connector.
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  Data: <searchLink fieldCode="AR" term="%22Bellucci%2C+Luca%22">Bellucci, Luca</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Labella%2C+Luca%22">Labella, Luca</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luca.labella@unipi.it</i><br /><searchLink fieldCode="AR" term="%22Marchetti%2C+Fabio%22">Marchetti, Fabio</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pineider%2C+Francesco%22">Pineider, Francesco</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Poneti%2C+Giordano%22">Poneti, Giordano</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> gponeti@iq.ufrj.br</i><br /><searchLink fieldCode="AR" term="%22Samaritani%2C+Simona%22">Samaritani, Simona</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Inorganica+Chimica+Acta%22">Inorganica Chimica Acta</searchLink>. Feb2021, Vol. 516, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+relaxation%22">Magnetic relaxation</searchLink><br /><searchLink fieldCode="DE" term="%22Terbium%22">Terbium</searchLink><br /><searchLink fieldCode="DE" term="%22Dysprosium%22">Dysprosium</searchLink><br /><searchLink fieldCode="DE" term="%22Coordination+polymers%22">Coordination polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+properties%22">Magnetic properties</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • High yield synthesis of lanthanide 1D-zigzag coordination polymers. • Zero field magnetization dynamics for the dysprosium derivative. • Two different relaxation processes for the dysprosium/yttrium system. • Each magnetic relaxation process compatible with a mixed Raman/Direct mechanism. The coordination chain {[Dy(dbm) 3 bpy]·C 7 H 8 } n (1) having only 4,4′-bipyridine as connector has been prepared in high yield and its structural and magnetic properties have been investigated. It is isostructural with the terbium analogue {[Tb(dbm) 3 bpy]·C 7 H 8 } n (2) and features units repeating in a 1D-zigzag fashion, where the metal is octa-coordinated in a distorted square antiprism geometry. Despite the 1D structure, the absence of paramagnetic connectors prevents the direct magnetic intrachain interaction among the lanthanide ions. In zero magnetic field, only a small fraction of the magnetization of 1 displayed slow dynamics with no dependence on temperature. Upon application of a 1 kOe magnetic field, a relaxation process appears, compatible with a mixed Raman/Direct mechanisms. Magnetic dilution in the diamagnetic Y(III)-based analogue revealed that actually two distinct relaxation processes are active for 1 , whose temperature dependence can be interpreted again with a mixed Raman/Direct relaxation model. Compound 2 displayed only in-field slow relaxation, compatible with the models employed for 1. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Inorganica Chimica Acta is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ica.2020.120165
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      – Code: eng
        Text: English
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        StartPage: N.PAG
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      – SubjectFull: Magnetic relaxation
        Type: general
      – SubjectFull: Terbium
        Type: general
      – SubjectFull: Dysprosium
        Type: general
      – SubjectFull: Coordination polymers
        Type: general
      – SubjectFull: Magnetic properties
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      – SubjectFull: Magnetic fields
        Type: general
    Titles:
      – TitleFull: Magnetic relaxation in dysprosium and terbium 1D-zigzag coordination chains having only 4,4′-bipyridine as connector.
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            NameFull: Bellucci, Luca
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            NameFull: Labella, Luca
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            NameFull: Marchetti, Fabio
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            NameFull: Pineider, Francesco
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              Text: Feb2021
              Type: published
              Y: 2021
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              Value: 516
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