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Heptanuclear disk‐like MII3LnIII4 (M = Ni, Co) coordination clusters: synthesis, structures and magnetic properties

AuthorsGriffiths, 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, A.; Kostakis, George E.
Issue Date2017
CitationEuropean Journal of Inorganic Chemistry (33): 3938–3945 (2017)
AbstractThe 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.
Publisher version (URL)https://doi.org/10.1002/ejic.201700728
Appears in Collections:(ICMA) Artículos
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