“…1,2 Bidentate aliphatic amines, like other neutral ligands, generally prefer the [ReO 2 ] + center. For example, [ReO 2 (en) 2 ] + (en = ethylenediamine), 3 [ReO 2 (tn) 2 ] + (tn = trimethylenediamine), 4 [ReO 2 (eten) 2 ] + (eten = N-ethylethylenediamine), 5 were characterized many years ago. Very recently, these complexes have attracted considerable interest since they proved useful for different applications.…”