Hybrid halobismuthates: The unusual {[BiBr6]…[BiBr5]…[BiBr6]}8- anionic framework

Publication date: Available online 15 June 2019Source: Journal of Molecular StructureAuthor(s): Vitalii Yu. Kotov, Elnara S. Safiullina, Andrey B. Ilyukhin, Petr A. Buikin, Kirill P. Birin, Khursand E. YorovAbstractNew hybrid bromobismuthates of 1,1'-(1,4-phenylenebis(methylene))bis(n-methylpyridin-1-ium) 1 (n = 4) and 2 (n = 3) dications and halobismuthates of 1-{[4-(Hal-methyl)phenyl]methyl}-2-methylpyridin-1-ium) 3 (Hal = Br) and 4 (Hal = I) monocations have been synthesized and characterized. The [BiBr5]2- anion with structure unusual for halobismuthates and two [BiBr6]3- anions form a linear 0-D fragment in compound 2. The Bi-Br(ax) distance in [BiBr5]2- anion (2.587 Å) is rather short for usual bromobismuthates. The formation of the linear fragment in compound 2 and the presence of short Bi-Br(ax) bonds in its structure do not affect a value of optical band gap.Graphical abstract
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research