Polybis­(NN-dimethyl­formamide)tris­(μ4-trans-stilbene-44′-dicarboxyl­ato)­tricadmium(II): a two-dimensional network with an unusual 36 topology

摘要

In the title compound, [Cd3(C16H10O4)3(C3H7NO)2]n or [Cd3(SDA)3(DMF)2]n (H2SDA is trans-stilbene-4,4′-dicarboxylic acid and DMF is dimethyl­formamide), the linear dicarboxylate ligand forms a two-dimensionally layered metal–organic network with the relatively uncommon 3⁶ topology. The structure reveals trinuclear secondary building units and has an octa­hedral geometry at a central metal ion (occupying a symmetry site) and tetra­hedral geometries at two surrounding symmetrically equivalent metal ions lying on a threefold axis. The six-connected planar trinuclear Cd^II centers, Cd3(O2CR)₆, play a role as potential nodes in generation of the relatively uncommon 3⁶ topology. The coordinated DMF unit is disordered around the threefold axis.