Reaction of the technetium(I)carbonyl complexes [Tc(PMe2Ph)3(CO)2Cl] and [Tc(PPh3)2(CO)3Cl] toward pseudo-allyl ligands such as triazenido, formamidinato, and acetamidinato. Crystal structures of [Tc(PMe2Ph)2(CO)2(p-CH3C6H4N:N:NC6H4CH3-p)] and [Tc(PMe2Ph)2(CO)2(C6H5N:C(CH3):NC6H5)]