| Abstract: | Organometallic Chemistry of Binuclear 1-Azadiene-Nickel(0) Complexes: Bimetallic Compounds with a Ni? Fe Bond by Addition of Pentacarbonyl-iron(0) and Nickelalactons by Ring Opening Reaction of Cyclic Anhydrides The binuclear nickel(0) complexes 1–3 , which contain as well bridging 1-azadienes ligands as five or six-membered (N∩N)-chelate rings react at ?30°C with Fe(CO)5 to form the bimetallic compounds 4–6 , containing a Ni? Fe bond and two carbonyl groups as bridging ligands. The coordination of the (bpy)Ni(0)] fragment to the olefin part of the 1-azadiene chain in 6 leads to the formation of the trinuclear complex 7 , which can storage CO2 at the peripheral position. Succinic acid anhydride or glutaric acid anhydrid undergo a ring opening reaction by reacting with 3 yield nickelalactones upon elimination of CO. |
