Heptanuclear Disk-Like MII 3LnIII 4 (M = Ni, Co) Coordination Clusters:Synthesis, Structures and Magnetic Properties

Griffiths, Kieran and Harding, Chris and Dokorou, Vasiliki N. and Loukopoulos, Edward and Sampani, Stavroula I. and Abdul-Sada, Alaa and Tizzard, Graham J. and Coles, Simon J. and Lorusso, Giulia and Evangelisti, Marco and 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). pp. 3938-3945. ISSN 1434-1948

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Abstract

The synthesis, characterization, crystal structures and magnetic properties of isoskeletal heptanuclear disk-like MII 3LnIII 4 coordination clusters with the general formula [CoII 3LnIII 4(µ3-OH)6L6(CF3SO3)][(CF3SO3)5] where Ln = Gd (2), Y (3) and [NiII 3LnIII 4(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.

Item Type:
Journal Article
Journal or Publication Title:
European Journal of Inorganic Chemistry
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1604
Subjects:
ID Code:
137064
Deposited By:
Deposited On:
01 Oct 2019 11:20
Refereed?:
Yes
Published?:
Published
Last Modified:
07 Oct 2020 08:05