Synthesis, Structure, and Photoluminescent Properties of [{Tb(Me2Si(NMes)2)(thf)2}2(μ-BH4)2]

D. A. Bashirov; Баширов Д. А.; T. S. Sukhikh; Сухих Т. С.; S. N. Konchenko; Конченко С. Н.

doi:10.31857/S0044457X23601025

Synthesis, Structure, and Photoluminescent Properties of [{Tb(Me2Si(NMes)2)(thf)2}2(μ-BH4)2]

作者: Bashirov D.A.¹, Sukhikh T.S.¹, Konchenko S.N.¹
隶属关系:
1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences
期: 卷 68, 编号 9 (2023)
页面: 1211-1216
栏目: КООРДИНАЦИОННЫЕ СОЕДИНЕНИЯ
URL: https://rjonco.com/0044-457X/article/view/666226
DOI: https://doi.org/10.31857/S0044457X23601025
EDN: https://elibrary.ru/YFSWIF
ID: 666226

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详细

The complex [{Tb(Me2Si(NMes)2)(thf)2}2(μ-BH4)2] (1) has been synthesized by the reaction of [{Tb(Me2Si(NMes)2)(thf)2}2(μ-Cl)2] (4; Mes is mesityl) with an excess of NaBH4 in THF. It has turned out that the complete replacement of the chloride ligands by BH4− occurs after heating the reaction mixture at 70°C for two weeks. When the reaction was stopped after five and seven days, polycrystalline [{Tb(Me2Si(NMes)2)(thf)2}2(μ-BH4)x(μ-Cl)2 – x] phases (x ⁓ 1.2 (2); 1.4 (3)), as well as single crystals corresponding to these compositions, were isolated. The structures of 1–3 have been determined by single-crystal X-ray diffraction. The photoluminescent properties of solutions of these complexes in THF have been studied. The study demonstrates that the substitution of
for Cl– leads to an increase in the luminescence quantum yield.

关键词

terbium, silanediamides, synthesis, crystal structure, luminescence

参考

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