Synthesis of novel cobalt imido and bridging nitride complexes

Abstract

Late metal metal-ligand multiple bonds are of interest due to their novel structural motifs and their ability to participate in group transfer reactions. Recent work has included the synthesis of new late transition metal imido complexes (M=NR or M≡NR) involving iron, cobalt and nickel. As part of our contribution to this area of research, we have prepd. a no. of cobalt imido complexes which feature the tripodal auxiliary ligand [PhBP_3] ([PhBP_3] = [PhB(CH_2PPh_2)_3]-); these imides were obtained via the oxidative degrdn. of org. azides. Addnl., a μ_2- bridging nitride complex of cobalt was prepd. by two routes and the magnetic properties and bonding of this bimetallic complex will be discussed. Furthermore, the potential of these species to undergo group transfer chem. will be addressed.

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