Figure 4
The crystal structure of (II), viewed along [100]. Three non-equivalent tetradentate oxalate groups link two nine-coordinated crystallographically unique Bi atoms (large spheres) in several different directions, thus forming a three-dimensional network. The four `free' water molecules are labelled; atom OW8 is disordered (see text). All Bi—O bonds are shown and the unit cell is outlined. |