Synthese und Kristallstruktur von Hexa(tert-butyl)bismocenium-tetrachloroaluminat / Synthesis and Crystal Structure of Hexa(tert-butyl)bismocenium Tetrachloroaluminate

Abstract

Abstract On chloride abstraction from chloro-bis{1,2,4-tri(tert-butyl)cyclopentadienyl}bismut(III) (2 ) with aluminum trichloride the salt [{C5H2(CMe3)3 -1,2,4}2Bi]+ AlCl4 - (1) has been obtained in good yield. The crystal structure of 1 shows a bismocenium cation with nearly parallel η5 - cyclopentadienyl rings (10.2° inclination of the best planes) and only a slight bending of the Cpcent -Bi-Cpcent axis (172.9°).