Two new hybrid compounds assembled from Keggin-type polyoxometalates and transition metal coordination complexes

► Two hybrids based on Pseudo-Keggin polyanions and metal coordination complexes. ► 1-D structure formed by polyanion bisupported metal coordination units linked by K+. ► A metal-chloride-ligand coordination complex [Cd2(Phen)4Cl2]2+. ► A hybrid based on polyanions and metal-chloride-ligand coordination complexes.