𝔖 Bobbio Scriptorium
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Hypervalent tetracoordinate organobismuth compounds (10-Bi-4)

✍ Scribed by Xiang Chen; Yohsuke Yamamoto; Kin-Ya Akiba

Book ID
102847434
Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
996 KB
Volume
6
Category
Article
ISSN
1042-7163

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✦ Synopsis

Abstract

A stable hypervalent 10‐Bi‐4 species, tetraethylammonium bis[α,α‐bis(trifluoromethyl)benzenemethanolato(2‐)‐C^2^],Obismuthanate(1‐), was prepared by the reaction of bismuth trichloride with 2 equiv of lithium 2‐(2‐lithiophenyl)‐2‐propoxide derivatives. The ate complex was inert toward MeI, instead, the corresponding nonfluorinated analogue, bis[α,α‐bis(dimethyl)benzenemethanolato(2‐)‐C^2^, O]bismuthanate(1‐), was reactive enough toward MeI to give O‐methylated product. Regioselective methylation at the nonfluorinated methanolate was observed in the reaction of unsymmetrically substituted ate complex, [α,α‐bis(dimethyl)benzenemethanolato(2‐)‐C^2^, O[]α,α‐bis(trifluoromethyl) benzenemethanolato(2‐)‐C^2^, O]bis‐muthanate(1‐). Mechanism of isomerization of these ate complexes and related protonated compounds and the synthesis and stability of [α,α‐bis(trifluoromethyl)‐benzenemethanolato (2‐) ‐C^2^, O]diarylbismuthanate‐(1‐) were also described.

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✍ Lucia Balazs; Hans J. Breunig; Enno Lork; Cristian Silvestru 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 148 KB

## Abstract The cyclobismuthanes R~__n__~Bi~__n__~, [R = 2‐(Me~2~NCH~2~)C~6~H~4~; __n__ = 3 (1a), 4 (1b)] have been synthesised by reduction of RBiCl~2~ with Na in liquid NH~3~ or by reaction of R~2~BiCl with LiAlH~4~ in Et~2~O. The reaction of 1a/b with W(CO)~5~·THF afforded the bismuthinidene com