Ruthenium carbonyl 1,4-diaza-1,3-butadiene (R-DAB) reaction sequence: Reversible CO addition to a trinuclear species without rupture of a metal-metal bond. Molecular structure of [1,4-dicyclohexyl-1,4-diaza-1,3-butadiene]nonacarbonyltriruthenium, Ru3(CO)9(c-Hx-DAB). A unique 50e trinuclear compound with two elongated Ru-Ru bonds
Koten, G. van; Keijsper, J.; Polm, L.H.; Vrieze, K.; Seignette, P.F.A.B.; Stam, C.H.
(1984) Inorganic chemistry, volume 24, issue 4, pp. 518 - 525