Yb3+ can be much better than Dy3+: SMM properties and controllable self-assembly of novel lanthanide 3,5-dinitrobenzoate-acetylacetonate complexes.
作者： Andrey V. Gavrikov , Nikolay N. Efimov , Andrey B. Ilyukhin , Zhanna V. Dobrokhotova , Vladimir M. Novotortsev
DOI: 10.1039/C8DT00624E
关键词: Self-assembly 、 Isostructural 、 Ion 、 Materials science 、 Derivative (chemistry) 、 Lanthanide 、 Crystallography 、 Dc field
摘要: The first representatives of the binuclear lanthanide 3,5-dinitrobenzoate-acetylacetonate complexes, namely isostructural compounds [Ln(dnbz)(acac)2(H2O)(EtOH)]2 (Ln = Eu (1), Gd (2), Tb (3), Dy (4), Ho (5), Er (6), Tm (7), and Yb (8); dnbz - 3,5-dinitrobenzoate anion; acac acetylacetonate (pentane-2,4-dionate) anion) were prepared characterized. SMM behavior compound 8 was shown to be surprisingly less sensitive composition Yb3+ coordination environment in comparison with that derivative. For 8, anisotropy barrier is Δeff/kB 26 K under dc field 2000 Oe. This value highest one currently known for complexes.
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