124518-53-2Relevant academic research and scientific papers
Ruthenium-Komplexe mit Diazadienen. X. Cycloheptatrien als Dienyl-yl-ligand am Ruthenium
Dieck, Heihdirk Tom,Kleinwaechter, Ingo,Haupt, Erhard T. K.,Bolze-Kuhrt, Doerte
, p. 351 - 362 (1989)
The bridge splitting reaction of 2 by piperidine (R''NH2) is different from the reaction of its oligomeric counterparts chloro-olefin-ruthenium complexes which give the corresponding hydrido complexes in that it gives the very reactive piperidido complex (2).Displacement of R''2NH from 2 with diazadienes (DAD = RN=CR'-CR'=NR) affords the new complexes (6).A detailed NMR analysis reveals an unexpected conformation and bonding type of the cycloheptatriene: Five carbon atoms of the olefinic system form a ?-bonding dienyl system, while the sixth sp2 center forms a localized bond to the metal.Complexes with not-too-bulky DAD ligands exhibit the presence of a second isomer (7), probably a rotational isomer with the olefinic ligand in the same conformation.
