Werner's pioneering work on cobalt(III) ammine chloride complexes laid the ground for our understanding of today's coordination chemistry. [ 1 1. Mann , FG Development of coordination chemistry at the University of Cambridge, 1925–1965 . Adv. Chem. Ser. 1967 , 62 , 120 – 146 . [CrossRef] View all references ] A wide range of molecules containing nitrogen atoms is used nowadays as ancillary ligands to tailor the reactivity of transition-metal complexes. ...