Poly[µ3-hydroxido-µ6-sulfato-µ3-(1,2,4-triazolato-κ3N1:N2:N4)-dicadmium(II)]: a cadmium-triazolate coordination polymer with a pseudo-cubane-like tetranuclear cluster.

The title complex, [Cd(2)(C(2)H(2)N(3))(OH)(SO(4))](n), is a three-dimensional metal-organic framework consisting of pseudo-cubane-like tetranuclear cadmium clusters, which are formed by four Cd(II) atoms, two sulfate groups and two hydroxide groups. The tetranuclear cadmium clusters are connected into a layered substructure by Cd-O bonds and adjacent layers are linked by triazolate ligands into a three-dimensional network. A photoluminescent study revealed that the complex exhibits a strong emission in the visible region which probably originates from a π-π* transition.