Acta Cryst. (1998). B54, 438-442 [ doi:10.1107/S0108768197017862 ]
Abstract: Bismuth tribenzoate, Bi(C6H5COO)3, was prepared by ligand exchange of bismuth triacetate with benzoic acid. A 1:1 disordered structure of P21/m symmetry, a = 7.858 (3), b = 14.442 (2), c = 16.807 (3) Å, ![[beta]](/logos/entities/beta_rmgif.gif)
= 92.26 (2)°, V = 1906 (1) Å3, Z = 4, consists of polymeric chains parallel to the a axis and can be related to an ideally ordered structure of B21/a symmetry with a' = 2a, b' = b and c' = 2c. This B-centred structure can itself be described as a modulation of an idealized parent structure of Pnma symmetry. The disorder is rationalized in terms of the pseudo-symmetry that relates the two formula units of Bi(C6H5COO)3 in the asymmetric unit of B21/a. In the polymeric chain each Bi atom is nominally nine-coordinate, with widely varying bond lengths arranged in a very asymmetric manner. The polymeric chain is created by each bismuth being chelated to three benzoate ligands. Each such ligand also has one of its O atoms bridging an adjacent Bi atom so that three bridging O atoms link adjacent bismuths. Apparent valences are consistent with expected values for all Bi and O atoms. A final value of 0.0454 was obtained for R(F) using the 1813 independent reflections (out of 2839) with I(h) > 3![[sigma]](/logos/entities/sigma_rmgif.gif)
[I(h)] to refine 185 parameters describing 56 non-H atoms.
Copyright © International Union of Crystallography
IUCr Webmaster