Single diastereomer, diamagnetic, octahedral Fe (II) tris chelate complexes are synthesised that contain three pendant pyridine proligands pre-organised for coordination to a second metal. They bind Cu (I) and Ag (I) with coordination geometry depending on the identity of the metal and the detail of the ligand structure, but for example homohelical (ΔFe, ΔCu) configured systems with unusual trigonal planar Cu cations are formed exclusively in ...
