Jump to main content
Jump to site search

Issue 46, 2014
Previous Article Next Article

Europium bis(dimethylsilyl)amides including mixed-valent Eu3[N(SiHMe2)2]6[μ-N(SiHMe2)2]2

Author affiliations

Abstract

Trivalent Eu[N(SiHMe2)2]3(THF)2 can easily be synthesized by applying a routine salt metathesis protocol (EuCl3(THF)2 and 3 equiv. of Li[N(SiHMe2)2] in n-hexane) which crystallizes isotypically to its analogues of the rare-earth metal series (space group P21/c). Transsilylamination of Eu[N(SiMe3)2]2(THF)2 with a slight excess of HN(SiHMe2)2 in n-hexane–THF yields the divalent trinuclear compound Eu{[μ-N(SiHMe2)2]2Eu[N(SiHMe2)2](THF)}2, the solid-state structure of which differs significantly from the samarium and ytterbium analogues by showing three unique molecules in the asymmetric unit of which one is related to the two others by an inversion. Using crude Eu[N(SiMe3)2]3 in transsilylamination reactions with HN(SiHMe2)2 in n-hexane afforded n-hexane-insoluble trivalent ate complexes {MEu[N(SiHMe2)2]4}n (M = Na, K) depending on the synthesis conditions of Eu[N(SiMe3)2]3. Performing the transsilylamination of Eu[N(SiMe3)2]3 with a large excess of HN(SiHMe2)2 at elevated temperatures gave reproducibly the donor-free, mixed-valent, trinuclear compound EuII{[μ-N(SiHMe2)2]EuIII[N(SiHMe2)2]3}2 in good yield.

Graphical abstract: Europium bis(dimethylsilyl)amides including mixed-valent Eu3[N(SiHMe2)2]6[μ-N(SiHMe2)2]2

Back to tab navigation

Supplementary files

Article information


Submitted
08 Aug 2014
Accepted
11 Sep 2014
First published
12 Sep 2014

Dalton Trans., 2014,43, 17324-17332
Article type
Paper

Europium bis(dimethylsilyl)amides including mixed-valent Eu3[N(SiHMe2)2]6[μ-N(SiHMe2)2]2

A. M. Bienfait, C. Schädle, C. Maichle-Mössmer, K. W. Törnroos and R. Anwander, Dalton Trans., 2014, 43, 17324
DOI: 10.1039/C4DT02411G

Social activity

Search articles by author

Spotlight

Advertisements