Yb3+ can be much better than Dy3+: SMM properties and controllable self-assembly of novel lanthanide 3,5-dinitrobenzoate-acetylacetonate complexes

Andrey V Gavrikov; Nikolay N Efimov; Andrey B Ilyukhin; Zhanna V Dobrokhotova; Vladimir M Novotortsev

doi:10.1039/c8dt00624e

Yb³⁺ can be much better than Dy³⁺: SMM properties and controllable self-assembly of novel lanthanide 3,5-dinitrobenzoate-acetylacetonate complexes

Dalton Trans. 2018 May 1;47(17):6199-6209. doi: 10.1039/c8dt00624e.

Authors

Andrey V Gavrikov¹, Nikolay N Efimov, Andrey B Ilyukhin, Zhanna V Dobrokhotova, Vladimir M Novotortsev

Affiliation

¹ N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, Russian Federation. penguin1990@yandex.ru nnefimov@narod.ru.

PMID: 29676422
DOI: 10.1039/c8dt00624e

Abstract

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 and characterized. The SMM behavior of the Yb compound 8 was shown to be surprisingly less sensitive to the composition of the Yb3+ coordination environment in comparison with that of the Dy derivative. For Yb compound 8, the anisotropy barrier is Δeff/kB = 26 K under the dc field of 2000 Oe. This value is the highest one currently known for binuclear Yb complexes.