Superacidic or not…? Synthesis, characterisation, and acidity of the room-temperature ionic liquid [C(CH3)3]+ [Al2Br7]-.
Superacidic or not…? Synthesis, characterisation, and acidity of the room-temperature ionic liquid [C(CH3)3]+ [Al2Br7]-.
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是否超酸……?
DOI:
10.1002/chem.201203260
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
I. Krossing
中科院分区:
文献类型:
--
作者:
F. Scholz;D. Himmel;H. Scherer;I. Krossing
The room‐temperature ionic liquid (RT‐IL) [C(CH3)3]+[Al2Br7]−(m.p. 2 °C) was generated by bromide abstraction fromtert‐butyl bromide with the Lewis acid aluminum bromide in the absence of solvent. The crystal structure of thetert‐butyl cation salt was determined by X‐ray diffraction. NMR, IR, and Raman spectroscopy, as well as quantum‐chemical and thermodynamic calculations, confirm the composition of this RT‐IL. Thus, one may consider this RT‐IL to be a readily accessible (and on a large scale) cationic Brønsted acid (protonated isobutene) with the potential for further reactivity. Based on the new absolute Brønsted acidity scale, we calculated an absolute pHabsvalue of 171 for liquid bulk [C(CH3)3]+[Al2Br7]−. This value is about as acidic as 100 % sulfuric acid (pHabs=171) and, thus, on the edge of superacidity.
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DOI:
10.1002/anie.201203958
发表时间:
2012
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Stoyanov,EvgeniiS;Stoyanova,IrinaV;Tham,FookS;Reed,ChristopherA
通讯作者:
Reed,ChristopherA
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
Peter Buzek;P. R. Schleyer;S. Sieber
通讯作者:
S. Sieber
DOI:
10.1021/ic00188a028
发表时间:
1984
期刊:
ChemInform
影响因子:
--
作者:
T. Mallouk;G. Rosenthal;G. Mueller;R. Brusasco;N. Bartlett
通讯作者:
N. Bartlett
影响因子:
4.3
作者:
Himmel, Daniel;Goll, Sascha K.;Krossing, Ingo
通讯作者:
Krossing, Ingo
影响因子:
15
作者:
S. Hollenstein;T. Laube
通讯作者:
T. Laube