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Heptanuclear disk-like MII 3LnIII 4 (M = Ni, Co) coordination clusters: Synthesis, structures and magnetic properties

Heptanuclear disk-like MII 3LnIII 4 (M = Ni, Co) coordination clusters: Synthesis, structures and magnetic properties
Heptanuclear disk-like MII 3LnIII 4 (M = Ni, Co) coordination clusters: Synthesis, structures and magnetic properties
The synthesis, characterization, crystal structures and magnetic properties of isoskeletal heptanuclear disk-like MII3LnIII4 coordination clusters with the general formula [CoII3LnIII4(µ3-OH)6L6(CF3SO3)][(CF3SO3)5] where Ln = Gd (2), Y (3) and [NiII3LnIII4(µ3-OH)6L6(CF3SO3)][(CF3SO3)5] where Ln = Dy (4), Gd (5), Y (6) are presented. All the compounds are stable in solution as confirmed by ESI-MS. Magnetic studies were performed for compounds 2, 4, 5 and 6 and indicate ferromagnetic coupling while the magnetocaloric properties of 5 are characterized by ΔSm = –15.4 J kg–1 K–1 at T = 5.0 K and ΔTad = 5.9 K at T = 2.3 K, for µ0ΔH = 7 T.
1434-1948
3938-3945
Griffiths, Kieran
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Harding, Chris
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Dokorou, Vasiliki N.
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Loukopoulos, Edward
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Sampani, Stavroula I.
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Abdul-sada, Alaa
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Tizzard, Graham J.
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Coles, Simon J.
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Lorusso, Giulia
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Evangelisti, Marco
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Escuer, Albert
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Kostakis, George E.
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Griffiths, Kieran
91984c79-162c-4653-8521-60b3e76764f2
Harding, Chris
12b3fe9b-ea02-4b36-8f5d-43eeb9f19638
Dokorou, Vasiliki N.
36f8e0dc-d915-4ad4-86dc-902221df8f8f
Loukopoulos, Edward
0c3abad3-9ed4-46cd-b03f-9cbb2fd3fff7
Sampani, Stavroula I.
346af07d-2a76-47b8-b21d-7416ebb69efc
Abdul-sada, Alaa
03b55c32-8062-4b73-926d-f243ca078a83
Tizzard, Graham J.
8474c0fa-40df-43a6-a662-7f3c4722dbf2
Coles, Simon J.
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Lorusso, Giulia
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Evangelisti, Marco
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Escuer, Albert
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Kostakis, George E.
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Griffiths, Kieran, Harding, Chris, Dokorou, Vasiliki N., Loukopoulos, Edward, Sampani, Stavroula I., Abdul-sada, Alaa, Tizzard, Graham J., Coles, Simon J., Lorusso, Giulia, Evangelisti, Marco, Escuer, Albert and Kostakis, George E. (2017) Heptanuclear disk-like MII 3LnIII 4 (M = Ni, Co) coordination clusters: Synthesis, structures and magnetic properties. European Journal of Inorganic Chemistry, 2017 (33), 3938-3945. (doi:10.1002/ejic.201700728).

Record type: Article

Abstract

The synthesis, characterization, crystal structures and magnetic properties of isoskeletal heptanuclear disk-like MII3LnIII4 coordination clusters with the general formula [CoII3LnIII4(µ3-OH)6L6(CF3SO3)][(CF3SO3)5] where Ln = Gd (2), Y (3) and [NiII3LnIII4(µ3-OH)6L6(CF3SO3)][(CF3SO3)5] where Ln = Dy (4), Gd (5), Y (6) are presented. All the compounds are stable in solution as confirmed by ESI-MS. Magnetic studies were performed for compounds 2, 4, 5 and 6 and indicate ferromagnetic coupling while the magnetocaloric properties of 5 are characterized by ΔSm = –15.4 J kg–1 K–1 at T = 5.0 K and ΔTad = 5.9 K at T = 2.3 K, for µ0ΔH = 7 T.

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Accepted/In Press date: 25 July 2017
e-pub ahead of print date: 7 September 2017
Published date: 8 September 2017

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Local EPrints ID: 416387
URI: https://eprints.soton.ac.uk/id/eprint/416387
ISSN: 1434-1948
PURE UUID: 8f98c061-fff3-4833-9cf4-74ae337cc858
ORCID for Graham J. Tizzard: ORCID iD orcid.org/0000-0002-1577-5779
ORCID for Simon J. Coles: ORCID iD orcid.org/0000-0001-8414-9272

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Date deposited: 14 Dec 2017 17:30
Last modified: 14 Mar 2019 05:32

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Contributors

Author: Kieran Griffiths
Author: Chris Harding
Author: Vasiliki N. Dokorou
Author: Edward Loukopoulos
Author: Stavroula I. Sampani
Author: Alaa Abdul-sada
Author: Simon J. Coles ORCID iD
Author: Giulia Lorusso
Author: Marco Evangelisti
Author: Albert Escuer
Author: George E. Kostakis

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