Abstract
New 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]methyl1}-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 angstrom) 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. (C) 2019 Elsevier B.V. All rights reserved.