A novel two-dimensional network formed by complexation of cucurbituril with cadmium ions

The crystal structure of compound {3[Cd2(C36H36N24O12)]·10Cl·10(H2O)}·2Cl·39(H2O) (1) is reported. It consists of complexes of cucurbituril and cadmium cations formed through ion-dipole interactions, in which a novel two-dimensional network is created by the complexation of cucurbituril and cadmium ions. Binding constants determined from voltammetric data indicate that Cd2+ has a high binding affinity for Q[6] (image by CV) and forms a 2:1 (M2+/Q[6]) complex.