Cationic Triarylchlorostibonium Lewis Acids.
Cationic Triarylchlorostibonium Lewis Acids.
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DOI:
10.1021/acs.organomet.2c00426
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发表时间:
2023-03-13
期刊:
影响因子:
2.8
通讯作者:
Benjamin, Sophie L.
中科院分区:
文献类型:
--
作者:
Coughlin, Omar;Kraemer, Tobias;Benjamin, Sophie L.
Organopnictogen cations show promise as powerful, tunable main-group Lewis acid catalysts. The synthesis, solid-state structures, and reactivity of a series of weakly coordinated triarylchlorostibonium salts [Ar3SbCl][B(C6F5)4] (Ar = Ph, 3-FC6H4, 4-FC6H4, 3,5-F2C6H3, 2,4,6-F3C6H2) are reported. The cation in each adopts a tetrahedral coordination environment of antimony, with near complete separation from the anion. Structural, computational, and reactivity studies reveal that the Lewis acidity of [Ar3SbCl]+ generally increases with increased fluorination of the Ar substituents, with a secondary quenching effect from para fluorination. [Ar3SbCl]+ is reduced to Ar3Sb in the presence of Et3SiH, and the mechanism of this reaction has been modeled computationally. Preliminary studies demonstrate that they are useful catalysts for the dimerization of 1,1-diphenylethylene and the Friedel–Crafts alkylation of benzene.
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影响因子:
4
作者:
Caputo, Christopher B.;Winkelhaus, Daniel;Stephan, Douglas W.
通讯作者:
Stephan, Douglas W.
影响因子:
2.8
作者:
Connelly, Samantha J.;Kaminsky, Werner;Heinekey, D. Michael
通讯作者:
Heinekey, D. Michael
影响因子:
46.2
作者:
Engesser TA;Lichtenthaler MR;Schleep M;Krossing I
通讯作者:
Krossing I
影响因子:
56.9
作者:
Caputo, Christopher B.;Hounjet, Lindsay J.;Stephan, Douglas W.
通讯作者:
Stephan, Douglas W.
DOI:
10.1107/s0108270192011958
发表时间:
1993-06-15
期刊:
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
影响因子:
--
作者:
BEGLEY, MJ;SOWERBY, DB
通讯作者:
SOWERBY, DB