Within the context of this doctoral dissertation, new trigonal imido complexes of 3d metals were synthesized, characterized and their reactivities were extensively studied. Particular interest was placed on the effects of the oxidation state of the metal precursor and the steric profile of both the ancillary ligand system and organoazide substrate. Additionally, computational methods were employed to give a better understanding of the interactions between the metal center and the nitrogen atom of the imido unit.