Metallosupramolecular zinc and cadmium complexes of Bis[4-(2-pyridyl)pyrimidinylthiomethyl]benzenes

Reactions of L1 and L2 (L1 = 1,4-bis[4-(2-pyridyl)pyrimidinylthiomethyl] benzene; L2 = 1,3-bis[4-(2-pyridyl)pyrimidinylthiomethyl]benzene) with CdI2, ZnI2 and Cd(NO3)2 led to the formation of two discrete bimetallic complexes and one single-handed helix, respectively. Conformation changes of ligands after interactions with metal salts were found due to the positional isomerism of xylyl groups and the effect of anions.