First Catalytic Dihydroamination of a Phosphaalkyne. Crystal and Molecular Structure of Trans-[Pdcl2{p(prinh)2ch2but}2]

Treatment of a dichloromethane solution of (BuCP)-C-t, containing a catalytic amount of TiCl4, with an excess of the primary amines RNH2 (R = Pr-i, Bu-t) quantitatively affords the corresponding bis-dialkylaminophosphine P((BuNH)-N-t)(2)- CH2But. P((PrNH)-N-i)(2)CH2But is structurally characterised by a single crystal X-ray diffraction study of its bis-trans-PdCl2 complex.