Tetra-<i>n</i>-butylammonium di-μ-hydroxo-bis[dinitratodioxouranate(VI)]

Fischer, Andreas; Palladino, Giuseppe

doi:10.1107/s1600536805021045

Cited by 7 publications

(4 citation statements)

References 5 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A search of the Cambridge Crystallographic Database [19] found only 10 other examples of this dimer [20] such as the representative example reported by Perry obtained at low pH from a mixture of imidazole and uranyl nitrate. [5] In all literature reported cases the counter cation is relatively large, for example imidazolium, [5] tetrabutylammonium, [21] or 4,4Ј-dipyridinium. [22] This makes sense given that the small charge to size ratio found for these and many IL cations can reduce the electrostatic interaction between the large uranyl dimers and effectively pack in space.…”

Section: Crystallographic Resultsmentioning

confidence: 99%

Crystallization of Uranyl Salts from Dialkylimidazolium Ionic Liquids or Their Precursors

et al. 2010

View full text Add to dashboard Cite

The interaction of uranyl nitrate hexahydrate with three ionic liquids and one ionic liquid precursor with minimal solvent addition led to the isolation and crystallographic characterization of four new uranyl salts: bis(1,3‐dimethylimidazolium) bis‐μ‐hydroxo‐bis[bis(nitrato‐O,O)dioxouranate(VI)], bis(1‐ethyl‐3‐methylimidazolium) bis‐μ‐hydroxo‐bis[bis(nitrato‐O,O)dioxouranate(VI)], bis(1,2,3‐trimethylimidazolium) bis‐μ‐hydroxo‐bis[bis(nitrato‐O,O)dioxouranate(VI)], and bis(1‐ethyl‐3‐methylimidazolium) trichlorobis(nitrato‐O,O)dioxouranate(VI). Each ion in the four isolated salts has precedence in the crystallographic literature, although the exact combinations of ions we observe in these salts are new. Some interesting differences in the packing of the ions can be related to the lack of an acidic C2‐H ring hydrogen atom in the 1,2,3‐trimethylimidazolium cation. It is suggested that future studies of these reactions be carried out under more strictly anhydrous conditions.

show abstract

Section: Crystallographic Resultsmentioning

confidence: 99%

Crystallization of Uranyl Salts from Dialkylimidazolium Ionic Liquids or Their Precursors

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Compound 1 crystallized in the triclinic space group P 1̅ (Table ) and consists of two [Bmim] + cations and two half [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] 2– anions in an asymmetric unit. Compounds with [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] 2– anions have been extensively studied with various countercations, such as imidazolium, , ammonium, and pyridinium . The compound 1 [Bmim] + cations with G′T and TE′ conformations, which maintain specific cation–anion interactions (Table S3, Supporting Information), could be compared with previous well-illustrated structures that have demonstrated the counterions [Mmim] + , [Emim] + , and [Emmim] + .…”

Section: Resultsmentioning

confidence: 99%

“…Compounds with [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] 2− anions have been extensively studied with various countercations, such as imidazolium, 18,20 ammonium, 74 and pyridinium. 75 The compound 1 [Bmim] + cations with G′T and TE′ conformations, which maintain specific cation−anion interactions (Table S3, Supporting Information), could be compared with previous well-illustrated structures 18 (Table S3, Supporting Information).…”

Section: Crystal Growth and Designmentioning

confidence: 99%

“…All of the conformations of [Bmim] + cations used in this work (Table S2, Supporting Information), such as TT, TG, G′T, TE′, TE, and TG′ are named based on torsion angles θ 1 and θ 2 (based on θ 0 being positive) outlined by Tsuzuki et al 73 and further illustrated by Saouane et al 58 Compound 1 crystallized in the triclinic space group P1̅ (Table 1) and consists of two [Bmim] + cations and two half [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] 2− anions in an asymmetric unit. Compounds with [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] 2− anions have been extensively studied with various countercations, such as imidazolium, 18,20 ammonium, 74 and pyridinium. 75 The compound 1 [Bmim] + cations with G′T and TE′ conformations, which maintain specific cation−anion interactions (Table S3, Supporting Information), could be compared with previous well-illustrated structures 18 that have demonstrated the counterions [Mmim] + , [Emim] + , and [Emmim] + .…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

Crystallization in Ionic Liquids: Synthesis, Properties, and Polymorphs of Uranyl Salts

Liu

2014

Crystal Growth & Design

View full text Add to dashboard Cite

Crystallizations in uranyl-containing ionic liquids yielding crystals {X} a {[UO 2 ] b [Y] c } with selected anions and cations (X = [Bmim] + for Y = Cl − , NO 3 − , and SCN − ; Y = Cl − for X = [Emim] + , [Emmim] + , [Bmim] + , and [Bmmim] + ;Emim = l-ethyl-3-methyl-imidazolium, Emmim = l-ethyl-2,3-dimethylimidazolium, Bmim = l-butyl-3-methylimidazolium, and Bmmim = l-butyl-2,3-dimethylimidazolium) were performed herein. Through standard crystallographic analyses, Hirshfeld surface analyses, and multiple characterization techniques, compounds with common cations/anions were investigated. For compounds [Bmim] 2 [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] (1), [Bmim] 3 [UO 2 (NCS) 5 ] (2), and [Bmim] 2 [UO 2 Cl 4 ] (3TT and 3TG), common [Bmim] + cations with different conformations were studied with respect to packing and interactions (for 1). The coordinated [(UO 2 ) 2 (μ-OH) 2 (NO 3 ) 4 ] 2− , [UO 2 (NCS) 5 ] 3− , and [UO 2 Cl 4 ] 2− anions that have historically been related to nuclear fuel cycles were demonstrated with respect to geometry and distortion. For compounds with common [UO 2 Cl 4 ] 2− anions [Emim] 2 [UO 2 Cl 4 ] (4), [Emmim] 2 [UO 2 Cl 4 ] (5), [Bmmim] 2 [UO 2 Cl 4 ] (6), 3TT, and 3TG, observed interionic interactions that have been previously impeded by limited structural information were discussed fully in relation to different cations and temperatures. Moreover, multistep phase transformations of 2, which have been undefined in solution studies, have been identified through differential scanning calorimetry analyses and polarizing optical microscopy. The polymorph transformations between 3TT and 3TG in solution, as controlled by uranyl concentration, were studied using optical microscopy and powder X-ray diffraction. The thermal stability, IR/Raman, and UV−vis/luminescence spectra of these compounds were also investigated. ■ INTRODUCTIONIonic liquids (ILs) are attractive to investigators due to their unique physical and chemical properties and have thus been widely examined in many areas. 1,2 Among their usages, crystallization in ILs is a complex and fascinating field of research. 3−5 Both the unique coordination features that cannot generally be observed using molecular solvents and the interaction specifics that are difficult to obtain in the liquid state of ILs can be investigated. 6,7 However, the crystallography data that have immensely promoted our understanding of intermolecular interactions 8 have not been fully explored regarding the crystallographic potential in IL systems.A special interest in f metal-containing ILs has recently arisen in various fields, resulting in many high-quality investigations involving crystallographic studies. 9−12 Specifically, promising applications of ILs in nuclear fuel cycles 13−17 have encouraged extensive studies on uranium-based IL systems, including the relatively common crystallization of uranium salts in ILs and novel explorations of crystallization methods in such complex systems. [3][4][5][6]13,18,19 Using the widely studied uranyl-imidazolium structures as...

show abstract

Synthesis, Spectroscopic Studies and Supramolecular Architecture in a Dinuclear Uranyl Complex, 2-Aminopyridinium [bis(µ2-hydroxo)-tetrakis(nitrato–κ2–O,O′)-tetraoxo-diuranium(VI)] Monohydrate

Gomathi¹,

Nirmalram²,

Muthiah³

2019

J Chem Crystallogr

View full text Add to dashboard Cite

Tetra-n-butylammonium di-μ-hydroxo-bis[dinitratodioxouranate(VI)]

Abstract: From an aqueous solution of uranyl nitrate hexahydrate and tetra‐n‐butylammonium nitrate, single crystals of the title compound, (C16H36N)2[U2(NO3)4(OH)2O4], were obtained. The structure features a dimeric hydroxo‐bridged tetranitratodihydroxobis[dioxouranate(VI)] dianion.

Cited by 7 publications

References 5 publications

Crystallization of Uranyl Salts from Dialkylimidazolium Ionic Liquids or Their Precursors

Crystallization of Uranyl Salts from Dialkylimidazolium Ionic Liquids or Their Precursors

Crystallization in Ionic Liquids: Synthesis, Properties, and Polymorphs of Uranyl Salts

Synthesis, Spectroscopic Studies and Supramolecular Architecture in a Dinuclear Uranyl Complex, 2-Aminopyridinium [bis(µ2-hydroxo)-tetrakis(nitrato–κ2–O,O′)-tetraoxo-diuranium(VI)] Monohydrate

Contact Info

Product

Resources

About

Tetra-n-butylammonium di-μ-hydroxo-bis[dinitratodioxouranate(VI)]

Abstract: From an aqueous solution of uranyl nitrate hexa­hydrate and tetra‐n‐butyl­ammonium nitrate, single crystals of the title compound, (C16H36N)2[U2(NO3)4(OH)2O4], were obtained. The structure features a dimeric hydroxo‐bridged tetra­nitratodihydroxobis[dioxouranate(VI)] dianion.

Cited by 7 publications

References 5 publications

Crystallization of Uranyl Salts from Dialkylimidazolium Ionic Liquids or Their Precursors

Crystallization of Uranyl Salts from Dialkylimidazolium Ionic Liquids or Their Precursors

Crystallization in Ionic Liquids: Synthesis, Properties, and Polymorphs of Uranyl Salts

Synthesis, Spectroscopic Studies and Supramolecular Architecture in a Dinuclear Uranyl Complex, 2-Aminopyridinium [bis(µ2-hydroxo)-tetrakis(nitrato–κ2–O,O′)-tetraoxo-diuranium(VI)] Monohydrate

Contact Info

Product

Resources

About

Abstract: From an aqueous solution of uranyl nitrate hexahydrate and tetra‐n‐butylammonium nitrate, single crystals of the title compound, (C16H36N)2[U2(NO3)4(OH)2O4], were obtained. The structure features a dimeric hydroxo‐bridged tetranitratodihydroxobis[dioxouranate(VI)] dianion.