{Ni II 8 Ln III 6 } (Ln = Gd, Dy) rod-like nano-sized heteronuclear coordination clusters with a double carbonate bridge skeleton and remarkable MCE behaviour

The newly obtained complexes [NiII8LnIII6(Piv)16(teaH)6(OCH3)2(CO3)2(H2O)2] Ln = Gd, Dy, show a remarkable μ5-carbonate bridged octanuclear planar {Ni4Ln4} core further capped with embedded {Ni3Ln} cubane motifs to afford a rod shaped nano-sized molecule of about 1.2 × 2.8 nm. Unusual MCE behaviour...

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Detalles Bibliográficos
Autores principales: Guarda, E., Bader, K., Van Slageren, J., Alborés, P.
Formato: JOUR
Materias:
Ferromagnetic materials
Ferromagnetism
Coordination clusters
Ferromagnetic and anti-ferromagnetic
Heteronuclear
Low-lying excited state
Nano sized
Rod-shaped
Nickel
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14779226_v45_n20_p8566_Guarda
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The newly obtained complexes [NiII8LnIII6(Piv)16(teaH)6(OCH3)2(CO3)2(H2O)2] Ln = Gd, Dy, show a remarkable μ5-carbonate bridged octanuclear planar {Ni4Ln4} core further capped with embedded {Ni3Ln} cubane motifs to afford a rod shaped nano-sized molecule of about 1.2 × 2.8 nm. Unusual MCE behaviour has been found due to multiple low lying excited states arising from competing ferromagnetic and anti-ferromagnetic Ni-Ni and Ni-Ln exchange interactions. © 2016 The Royal Society of Chemistry.

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