The chemistry of hetero-allene and -allylic derivatives with rhodium and iridium II. Rhodium(I)- and iridium(i)-phosphine complexes of hetero-allylic ligands of the type [Ph2PC(x)NR]− (X = S, NR, O) and [Ph2P(W)C(S)NR]− (Q = S, O). Synthesis and 31P-NMR

Some known and new hetero-allylic derivatives [Ph2PC(X)NR]− (X = S, NR, O) and [Ph2P(Q)C(S)NR]− (Q = S, O) have been shown to react with rhodium(I)- and iridium(I)-phosphine compounds to give stable complexes M(PPh3)2[Ph2PC(X)NR] (A) and M(PPh3)2[Ph2P(Q)C(X)NR] (B) (M = Rh, Ir) in which the ligands are bidentate. P, S(P) and O(P) are always coordinated and the coordination preference of the other atoms is: S > NR > O.