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DOI:10.1002/chem.201203260 - Corpus ID: 7159126
@article{Scholz2013SuperacidicON, title={Superacidic or not…? Synthesis, characterisation, and acidity of the room-temperature ionic liquid [C(CH3)3]+ [Al2Br7]-.}, author={Franziska Scholz and Daniel M Himmel and Harald Scherer and Ingo Krossing}, journal={Chemistry}, year={2013}, volume={19 1}, pages={ 109-16 }, url={https://api.semanticscholar.org/CorpusID:7159126}}- F. Scholz, D. Himmel, I. Krossing
- Published in Chemistry 2 January 2013
- Chemistry
This RT-IL is considered to be a readily accessible cationic Brønsted acid (protonated isobutene) with the potential for further reactivity and an absolute pH(abs) value of 171, about as acidic as 100 % sulfuric acid and on the edge of superacidity.
27 Citations
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27 Citations
- M. HogMarius SchneiderI. Krossing
- 2017
Chemistry
Chemistry
Aluminum electrodeposition from Lewis acidic ILs based on AlBr3 and 1-hexyl-3-methylimidazolium bromide is shown and the stability range of various formulations is investigated.
- 8
- F. ScholzD. Himmel I. Krossing
- 2015
Chemistry
Chemistry
Bulk protonated mesitylene, toluene, and benzene bromoaluminate salts were stabilized and characterized in the superacidic system HBr/n AlBr3 with NMR spectroscopy and X-ray analysis of [HC6 H3 (CH3…
- 20
- H. BöhrerNils TrappD. HimmelMario SchleepI. Krossing
- 2015
Chemistry
Dalton transactions
Investigations indicated that FLP chemistry based on 1 is considerably less favored than that with B(C6F5)3, in agreement with control NMR experiments indicating hydride transfer from [H-B(Ohfip)3](-) upon reaction with B[C6f5]3, and that the Lewis acidity towards HSAB hard and soft ions was investigated for gaining a deeper insight.
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- 2015
Chemistry
Chemphyschem : a European journal of chemical…
Standard states, activity, and activity coefficient definitions for IL solvent systems were developed from general thermodynamic considerations and then extended to a general mixed solvent standard state and it was shown that bromoaluminate ILs are suited for reaching superacidic conditions.
- 20
- F. ScholzD. HimmelLea EiseleWiebke UnkrigI. Krossing
- 2014
Chemistry
Angewandte Chemie
This unexpected simple and straight forward access shows that HBr/AlBr3 is an underestimated superacid that should be used more frequently.
- 24
- W. BeichelJ. M. PanzerJulian HättyXiao YeD. HimmelI. Krossing
- 2014
Chemistry
Angewandte Chemie
The conductivities and viscosities of two representative ILs were investigated in terms of Walden plots, and the pILs were found to be little associated ILs, comparable to conventional aprotic ILs.
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- F. ScholzWiebke UnkrigPhilipp EidenMichael SchmidtA. GarsuchI. Krossing
- 2015
Chemistry, Materials Science
Lithium chloro- and bromoaluminates were prepared, fully characterized, and investigated as conducting salts for battery applications. In addition, thermodynamic investigations of their lattice…
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- M. HasaniJ. YargerC. Angell
- 2016
Chemistry
Chemistry
A new method is described using NMR spectroscopy of a weak base, a substituted urea, 1,3-dimethyl-2-imidazolidinone (DMI), as it is protonated by Brønsted acids of different strengths and characters, to sort anions in order of increasing hydrogen bond basicity.
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- 2016
Chemistry
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- E. StoyanovGabriel dos Passos Gomes
- 2015
Chemistry
The journal of physical chemistry. A
Enhanced H-bonding between t-Bu(+) and Anion(-) strengthens hyperconjugation and promotes further cation stabilization, indicating that the influence of the condensed phase on t- Bu(+) stabilization is substantial.
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Abstract The tert-butyl cation is formed in the reaction of tert-BuCl with AlCl3 or GaCl3 in anhydrous liquid HCl as a solvent, or of tert-BuBr with AlBr3 in HBr. At - 30 °C solutions of [C(CH3)3+]…
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A unified Brønsted acidity scale is proposed on the basis of the absolute chemical potential of the proton in any medium and the reference state for maximum acidity is defined as the absolute standard chemical potential mabsA(H, g) of theProton in the gas phase which is arbitrarily set to 0 kJ mol .
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BP86/SV(P) and auxiliary MP2/TZVPP, G2, and CBS-Q calculations on a representative set of weakly coordinating anions of type [M(L)n]-, their parent neutral Lewis acids and their ate complexes with fluoride found that in most cases gas-phase calculations and solution calculations give comparable results for the stability of the anion.
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The structure of the tert-butyl cation (1) could be determined by an X-ray crystal structure analysis of its Sb 2 F 11 -salt at-80 o C (P2 1 , a=6.123(2) A, b=13.758(4) A, c=7.614(4) A, β=100.67(3) o…
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Chemistry
Angewandte Chemie
The X-ray crystal structures of tert-butyl, tert-pentyl, and methyl-cyclopentyl cations have been determined with CHB 11Me5X6- counterions with the aim of isolating stable salts at room temperature when partnered with inert carborane anions.
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Environmentally sensitive: A combination of C-H anion hydrogen bonding and hyperconjugative charge delocalization explains the sensitivity of the IR spectrum of the tert-butyl cation to its anion…
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Electrostatic solvation free energies were computed for several small neutral bases and their conjugate acids using a continuum solvation model called the self‐consistent isodensity polarizable…
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The structure of molten mixtures of (KX)y(AlX3)1−y was investigated by neutron diffraction for X=Cl and Br and y=0.25 and 0.33. These melts, known as acidic haloaluminates, contain different ionic…
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Chemistry
Chemphyschem : a European journal of chemical…
The findings provide the first direct access to accurate predictions of liquid entropies of ILs, which are tedious and time-consuming to measure.
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Chemistry
Chemistry
The findings show that quantum-chemical calculations can greatly improve the VBT approaches, which were parameterized for simple, inorganic salts with ideally point-shaped charges.
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