The title diamines were prepared according to von Auwer's/Arakawa's procedures starting from appropriately substituted benzaldehydes and acetophenones via chalcones, addition of two moles of hydroxylamine, reduction, and separation of diastereomers as N,N′‐bisacetamides. ‐ The Pt(II) complexes of the title ligands are described in the following paper.