Uranyl-tri- bis(silyl)amide Alkali Metal Contact and Separated Ion Pair Complexes

Inorganic Chemistry
Philip J CobbStephen T Liddle

Abstract

We report the preparation of a range of alkali metal uranyl(VI) tri- bis(silyl)amide complexes [{M(THF) x}{(μ-O)U(O)(N″)3}] (1M) (N″ = {N(SiMe3)2}-, M = Li, Na, x = 2; M = K, x = 3; M = K, Rb, Cs, x = 0) containing electrostatic alkali metal uranyl-oxo interactions. Reaction of 1M with 2,2,2-cryptand or 2 equiv of the appropriate crown ether resulted in the isolation of the separated ion pair species [U(O)2(N″)3][M(2,2,2-cryptand)] (3M, M = Li-Cs) and [U(O)2(N″)3][M(crown)2] (4M, M = Li, crown = 12-crown-4 ether; M = Na-Cs, crown = 15-crown-5 ether). A combination of crystallographic studies and IR, Raman and UV-vis spectroscopies has revealed that the 1M series adopts contact ion pair motifs in the solid state where the alkali metal caps one of the uranyl-oxo groups. Upon dissolution in THF solution, this contact is lost, and instead, separated ion pair motifs are observed, which is confirmed by the isolation of [U(O)2(N″)3][M(THF) n] (2M) (M = Li, n = 4; M = Na, K, n = 6). The compounds have been characterized by single crystal X-ray diffraction, multinuclear NMR spectroscopy, IR, Raman, and UV-vis spectroscopies, and elemental analyses.

References

Jan 12, 2001·Inorganic Chemistry·M P WilkersonB L Scott
Jun 11, 2002·Inorganic Chemistry·Marianne P WilkersonBrian L Scott
Oct 30, 2004·Dalton Transactions : an International Journal of Inorganic Chemistry·Jean-Claude BerthetM Ephritikhine
Nov 30, 2004·Chemical Communications : Chem Comm·Shaheed A MungurPolly L Arnold
Jan 26, 2007·Chemical Communications : Chem Comm·Jérôme MaynadiéMichel Ephritikhine
Apr 28, 2007·The Journal of Physical Chemistry. a·Robert G Denning
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Jan 15, 2008·Angewandte Chemie·Peter B HitchcockAndrey V Protchenko
Jan 19, 2008·Nature·Polly L ArnoldJason B Love
Jul 16, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Lani A SeamanTrevor W Hayton
Feb 16, 2011·Chemical Society Reviews·Stephen T LiddleAshley J Wooles
Jan 17, 2012·Inorganic Chemistry·Skye FortierTrevor W Hayton
Jun 30, 2012·Science·David M KingStephen T Liddle
Nov 8, 2012·Chemical Reviews·Matthew B Jones, Andrew J Gaunt
Nov 17, 2012·Chemistry : a European Journal·Robert J Baker
Dec 12, 2012·Journal of the American Chemical Society·Andrew J LewisEric J Schelter
Dec 14, 2012·Inorganic Chemistry·Henry S La Pierre, Karsten Meyer
Jun 25, 2013·Chemistry : a European Journal·Guy M JonesJason B Love
Aug 9, 2013·Journal of the American Chemical Society·Andrew J LewisEric J Schelter
Aug 30, 2013·Journal of the American Chemical Society·Matthew R MacDonaldWilliam J Evans
Oct 31, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Emtithal HashemRobert J Baker
Nov 22, 2013·Inorganic Chemistry·David D Schnaars, Richard E Wilson
Apr 5, 2014·Journal of the American Chemical Society·David M KingStephen T Liddle
Jun 4, 2014·Angewandte Chemie·Henry S La PierreKarsten Meyer
Jun 11, 2014·Inorganic Chemistry·Andrew J LewisEric J Schelter
Dec 30, 2014·Acta Crystallographica. Section A, Foundations and Advances·George M Sheldrick
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Jun 3, 2015·Chemical Communications : Chem Comm·Benedict M Gardner, Stephen T Liddle
Jun 17, 2015·Angewandte Chemie·Stephen T Liddle
Apr 7, 2016·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Colin R GroomSuzanna C Ward
Sep 30, 2016·Nature Communications·Elizabeth P WildmanStephen T Liddle
Mar 10, 2017·Nature Communications·Elizabeth P WildmanStephen T Liddle

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