AQUACOMPLEXES OF RARE EARTH ELEMENTS (Ce3+, Eu3+, Gd3+ and Yb3+) WITH closo-DODECABORATE ANION: SYNTHESIS, STRUCTURE, PROPERTIES

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Aquacomplexes [M(H2O)8]2[B12H12]3·15H2O (M = Eu3+, Gd3+, Yb3+) and [Ce(H2O)9]2[B12H12]3·15H2O stabilized by closo-dodecaborate anion have been synthesized by neutralization of (H3O)2[B12H12] solution with rare earth element (REE) oxides M2O3 (M = Eu3+, Gd3+, Yb3+) and CeO2 and characterized. The structures of [Eu(H2O)8]2[B12H12]3·15H2O and [Ce(H2O)9]2[B12H12]3·15H2O have been determined by X-ray diffraction analysis. It was found that the reaction in the CeO2/(H3O)2[B12H12] system is accompanied by the redox transformation Ce4+ → Ce3+, while for the M2O3 (M = Eu3+, Gd3+, Yb3+)/(H3O)2[B12H12] systems, stabilization of the oxidation state of the corresponding REE has been observed. The luminescent properties of [Ce(H2O)9]2[B12H12]3·15H2O have been studied. It was shown that this compound emits in the near ultraviolet region with an emission maximum at 370 nm.

作者简介

I. Myshletsov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: korolencko0110@yandex.ru
Moscow, Russia

E. Malinina

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

A. Kubasov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

G. Buzanov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

L. Goeva

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

S. Nikiforova

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

A. Son

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

N. Kuznetsov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Moscow, Russia

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