Elementorganische Amin/Imin-Verbindungen, XVIII [1] Amino-Imino-Thiophosphorane: σ3, λ5-Phosphazene / Elementorganic Amino/Imino Compounds, XVIII [1] Aminoiminothiophosphoranes: σ3, λ5-Phosphazenes

The reaction of the aminoiminothiophosphoranes (1) with methanol yields the bisamino-thiophosphoric acid derivatives (3). la and IVb → VTb element halides form the new P-N element four membered rings 4 →7, which partially exist as a mixture of eis and trans isomers. Different ylide group transfer is observed on the reaction of la with trimethyl -phosphine or trimethyl phosphite. With trimethylphosphine (CH3)3P(S) and a phos-pha(III)azene are formed, with trimethyl phosphite (CH3O)3P = NC(CH3)3 and the [2 + 2] cycloaddition product of la and (R3C)(R3Si)N-P = S (R = CH3) can be isolated.