Post-synthetic modifications of cadmium-based knots and links†
Three topologically non-trivial cadmium(II)-based complexes—Cd-C, Cd-TK and Cd-SL—were simultaneously self-assembled in a dynamic library, individually isolated and fully characterized using solid-state, gas-phase and solution-phase techniques. Post-synthetic modifications, including reduction and transmetalation, were subsequently achieved. Imine bond reduction followed by demetallation led to the isolation of the corresponding organic molecules C, TK and SL. Transmetalation of Cd-TK and Cd-SL with the zinc(II) cation resulted in isolation of the corresponding zinc(II)-containing complexes Zn-TK and Zn-SL.