The Fluoroacyltris(trifluoromethyl)borate Ion, [(CF₃)₃BC(O)F]⁻, a Fluoroacylboron Complex

Abstract

Nucleophilic addition of fluoride ions at the carbonyl carbon atom in (CF3)3BCO in liquid sulfur dioxide leads to the formation of the boron acyl fluoride ion [(CF3)3BC(O)F]− (see structural formula), the first example of a compound with a BC(O)F group and an anionic acyl fluoride.

[(CF3)3BCP]− and [(CF3)3BCAs]−: Thermally Stable Phosphaethynyl and Arsaethynyl Complexes

“…[11] In the homologous cyanoborate ion, [(CF 3 ) 3 (Table 1). [16,20,21] In addition the 11 À ions are depicted in Figure 1 and Figure 2. In both spectra there are two resonance signals in an intensity ratio of 1:3, assigned to the CX À ligands and the CF 3 groups, respectively.…”

Trifluormethylborane und ‐borate – neue Synthesestrategien und Anwendungen

“…[80,81] von CF 3 -gegenüber C 2 F 5 -Gruppen an Bor [28] und der stär-keren B-N-Bindung in (CF 3 ) 3 BNMe 3 nicht auf dieses über-tragbar ist. [89] Die Reaktion von Dimethylether mit (CF 3 ) 3 (29)].…”

Theoretical investigation on multinuclear NMR chemical shifts of some tris(trifluoromethyl)boron complexes

“…In our previous work, [17 -20] density functional calculations of 19 F NMR chemical shifts of some metal fluorides have been successfully performed. Here we extended our theoretical study to the 11 B, 13 C, and 19 F NMR chemical shifts of the tris(trifluoromethyl)boron complexes. The structures were optimized and compared.…”

“…[6 -11] Recently, Finze and co-workers reported the synthesis, structural, chemical, and spectroscopic properties of a series of new tris(trifluoromethyl)boron complexes. [12 -16] This series of compounds provide rich 11 B, 13 C, and 19 F NMR information. Therefore, deeper investigation is worthwhile.…”

“…Except for 1 H and 13 C that are commonly studied, 19 F is an ideal nucleus for NMR investigation by virtue of high signal sensitivity, large range of chemical shift, and large value of spin coupling constant. With the development of NMR techniques, 19 F NMR has found more and more applications, ranging from organic to inorganic, solution to solid, and chemistry to biology.…”