Synthesis of tetradentate bisamino-bisthiol complexes of oxorhenium(V) as structural mimics of steroids

Two tetradentate chelate systems have been synthesized in order to prepare metal complexes with oxorhenium(V) whose structures will mimic that of steroids. The chelate system with amide/amine/thioether/thiol donor sites failed to give a stable complex, but the corresponding diamine chelate gave a stable complex.