Isolation of base stabilized fluoroborylene and its radical cation

被引：15

作者：

Sarkar, Samir Kumar ^{[1
]}

Siddiqui, Mujahuddin M. ^{[1
]}

Kundu, Subrata ^{[1
]}

Ghosh, Munmun ^{[1
]}

Kretsch, Johannes ^{[1
]}

Stollberg, Peter ^{[1
]}

Herbst-Irmer, Regine ^{[1
]}

Stalke, Dietmar ^{[1
,4
]}

Stueckl, A. Claudia ^{[1
]}

Schwederski, Brigitte ^{[2
]}

Kaim, Wolfgang ^{[2
]}

Ghorai, Sagar ^{[3
]}

Jemmis, Eluvathingal D. ^{[3
]}

Roesky, Herbert W. ^{[1
]}

机构：

[1] Univ Gottingen, Inst Anorgan Chem, Tammannstr 4, D-37077 Gottingen, Germany

[2] Univ Stuttgart, Inst Anorgan Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany

[3] Indian Inst Sci, Inorgan & Phys Chem Dept, Bangalore 560012, Karnataka, India

[4] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

DALTON TRANSACTIONS | 2019年 / 48卷 / 24期

关键词：

BORON MONOFLUORIDE; REACTIVITY; COORDINATION; COMPLEXES; CHEMISTRY; CONVERSION; LIGANDS; SINGLE; ADDUCT; IONS;

D O I：

10.1039/c9dt01899a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Herein, we report the synthesis and characterization of the metal free low valent fluoroborylene [(Me-cAAC)(2)BF] (1) stabilized by cyclic (alkyl)(amino) carbene (cAAC). The fluoroborylene 1 is obtained by the reductive defluorination of Me-cAAC:BF3 with 2.0 equivalents of KC8 in the presence of 1.0 equivalent of Me-cAAC. Due to its highly electron rich nature, 1 underwent one-electron oxidation with 1.0 equivalent of lithium tetrakis(pentafluorophenyl)borate [LiB(C6F5)(4)] to form the radical cation [(Me-cAAC)(2)BF](+)[B(C6F5)(4)](-) (2). DFT studies suggested that the lone pair of electrons is localized on the boron atom in 1, which explains its unprecedented reactivity. Both compounds 1 and 2 were characterized by X-ray crystallography. The radical cation 2 was studied by EPR spectroscopy.

引用

页码：8551 / 8555

页数：5

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