Journal ArticleDOI
Coordination Trends in Alkali Metal Crown Ether Uranyl Halide Complexes: The Series [A(Crown)]2[UO2X4] Where A = Li, Na, K and X = Cl, Br
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TLDR
The Raman spectra reveal nu(U-O) values that correlate with expected trends and structural trends are discussed within the context of classical principles of hard-soft acid-base theory.Abstract:
UO2(C2H3O2)2·2H2O reacts with AX or A(C2H3O2 or ClO4) (where A = Li, Na, K; X = Cl, Br) and crown ethers in HCl or HBr aqueous solutions to give the sandwich-type compounds [K(18-crown-6)]2[UO2Cl4] (1), [K(18-crown-6)]2[UO2Br4] (2), [Na(15-crown-5)]2[UO2Cl4] (3), [Na(15-crown-5)]2[UO2Br4] (4), [Li(12-crown-4)]2[UO2Cl4] (5), and [Li(12-crown-4)]2[UO2Br4] (6). The compounds have been characterized by single-crystal X-ray diffraction, powder diffraction, elemental analysis, IR, and Raman spectroscopy. The [UO2X4]2- ions coordinate to two [A(crown)]+ cations through the four halides only (2), through two halides only (3), through the two uranyl oxygens and two halides (3, 4), or through the two uranyl oxygen atoms only (5, 6). Raman spectra reveal νU-O values that correlate with expected trends. The structural trends are discussed within the context of classical principles of hard−soft acid−base theory.read more
Citations
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Journal ArticleDOI
Uranyl bearing hybrid materials: synthesis, speciation, and solid-state structures.
Journal ArticleDOI
Oxo ligand functionalization in the uranyl ion (UO22
Skye Fortier,Trevor W. Hayton +1 more
TL;DR: A review of the chemistry of the two oxo ligands of the uranyl ion can be found in this article, where the authors explore the interaction of uranyl oxoxide ligands with Lewis acids, and outline attempts to selectively functionalize the oxo-ligands by chemical means.
Journal ArticleDOI
Extending the chemistry of the uranyl ion: Lewis acid coordination to a U=O oxygen.
TL;DR: Treatment of the thf adduct UO2(NCN)thf (NCN = [(Me3SiN)CPh(NSiMe3)]) (1) with 2 equiv of B(C6F5)3 provides UO{OB(C 6F5]3}( NCN)2 (2) the first example of a neutral uranyl complex exhibiting Lewis basic behavior.
Journal ArticleDOI
Selective oxo functionalization of the uranyl ion with 3d metal cations.
TL;DR: The linear uranyl dication [UO2]2+ can be bound in one of two coordination sites in the ditopic Pacman-shaped pyrrolic macrocyle H4L using Mn2+, Fe2+, or Co2+ cations in the second donor compartment.
Journal ArticleDOI
Isolation of Stable Organodysprosium(II) Complexes by Chemical Reduction of Dysprosium(III) Precursors
TL;DR: In this paper, the reduction of bis(tri-tert-butylcyclopentadienyl)dysprosium(III) complexes by potassium/graphite in the presence of a crown ether has been shown to yield structurally characterized divalent organolanthanide compounds.
References
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Book
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TL;DR: In this article, inorganic chemistry principles of structure and reactivity are presented. But, they do not cover how to use these principles in the design of products, and they are not available in any type of product.
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TL;DR: In this paper, a series of uranyl complexes KxUO2Ly(NO3)2, where L is the variable ligand (or ligands), has been prepared; it has been shown that a ligand series may be defined using the antisymmetric stretching frequency of the uranyl entity, and this series exhibits a remarkable parallelism with the spectrochemical series defined by Δ in octahedral complexes of transition metals of the first and 2nd series.
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On the determination of uraniumoxygen bond lengths in dioxouranium(VI) compounds by Raman spectroscopy
John R. Bartlett,Ralph P. Cooney +1 more
Journal ArticleDOI
Aqueous uranium complexes. 2. Raman spectroscopic study of the complex formation of the dioxouranium(VI) ion with a variety of inorganic and organic ligands
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