Acta Cryst. (2003). C59, m501-m504 [doi:10.1107/S0108270103023618]
Abstract: The crystal structures of two bismuth(III) oxalate hydrates, previously described as `Bi2(C2O4)3·H2C2O4' and `Bi2(C2O4)3·7H2O', were solved and refined from single-crystal X-ray diffraction data. The results led to the revised chemical formulae Bi2(C2O4)3·6H2O and Bi2(C2O4)3·8H2O, respectively. Both dibismuth(III) trioxalate hexahydrate (tetraaquatri-![[bold mu]](/logos/entities/mu_bdgif.gif)
-oxalato-dibismuth(III) dihydrate, {[Bi2(C2O4)3(H2O)4]·2H2O}n) and dibismuth(III) trioxalate octahydrate (tetraaquatri--oxalato-dibismuth(III) tetrahydrate {[Bi2(C2O4)3(H2O)4]·4H2O}n) are characterized by a three-dimensional network of Bi atoms connected by tetradentate oxalate groups. All ligand and `free' water molecules are located in channels and voids. The mean Bi-O bond lengths are 
2.51 Å. The lone electron pairs on all Bi3+ cations are stereochemically inactive.
Formula: [Bi2(C2O4)3(H2O)4]·2H2O and [Bi2(C2O4)3(H2O)4]·4H2O
Online 8 November 2003
 |   Structure factor file (CIF format) (143.5 kbytes) |
| Structure factor file (CIF format) (299.6 kbytes) |
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