Two novel 3-D bismuth oxalates with organic amines protruding in channels

In this work, two novel 3-D oxalate-containing bismuth compounds with channels were obtained by hydrothermal method. In compound 1, the connectivity between Bi and three oxalates gives rise to a honeycomb-like layer, with a 12-membered aperture in the ac plane. Then the layers are also connected through oxalate ligands, creating the 3-D structure with a channel about 5.0 Å×5.0 Å along the c-axis. The uncoordinated water molecules and protonated imidazole molecules were located in the channels.