The influence of aromatic cations on the geometries of the Bi(III) halide polyhedra. Synthesis and crystal structures of quinolinium, isoquinolinium and 8-hydroxyquinolinium polychlorobismuthate(III) derivatives

The compounds [quinolinium](4)[Bi2Cl10] (1), [isoquinolinium](4)[Bi2Cl10]. 2H(2)O (2) and [8-hydroxyquinolinium](4)[BiCl6]. Cl . 2H(2)O (3) have been obtained by reacting bismuthate oxide and the appropriate base in KCI acid medium. The crystal structures of 1 and 2 consist of quinolinium and isoqui nolinium cations, respectively, interacting through hydrogen bonding with [ Bi2Cl10](4-) dimers. The different degree of interactions in the two deriva tives causes significant differences in the bond distances of the anions. T he crystal structure of 3 is made of [BiCl6](3-) and Cl- anions and 8-hydro xyquinolinium cations. Hydrogen bond interactions including the N-bonded an d O-bonded H atoms together with an interstitial chlorine atom stabilize th e entire crystal structure. (C) 2001 Elsevier Science B.V. All rights reser ved.