Aluminum complexes imido

Similar treatment of the dimeric arylimido complex [Sm(NHAr)3]2 (Ar = 2,6-Pr 2C6H3) with trimethylaluminum resulted in an unusual imido-bridged heterobimetallic samarium-aluminum complex (Scheme 242).795,864... 

So far, much of the discussion has focussed on the bonding of phosphinidene units to aluminum, gallium, or indium. However, we are also interested in the coordination of phosphinidenes to transition metals - particularly in cases where the phosphinidene unit coordinates in a terminal fashion. As indicated below, terminal phosphinidene complexes, like imido complexes, can exist in angular or linear forms. 

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