Inorganic Chemistry, Vol.33, No.25, 5639-5642, 1994
N-Cyano-P-Hydrogenoiminophosphorane Trimethylchlorostannane Adducts (R(2)P(H)=n-C-N-Center-Dot-Me(3)SnCl) and Related Species - Building-Blocks for bis(Carbodiimides) of Phosphorus
Trimethylstannylcyanamide (8) reacts with bis(dialkylamino)chlorophosphanes and (dialkylamino)dichlorophosphanes affording Me(3)SnCl adducts of N-cyano-P-hydrogenoiminophosphoranes 9a,b (90-95% yield), and bis-Me(3)SnCl adducts of N-cyano-P-hydrogeno-P-cyanamidoiminophosphoranes 14a-c (78 to 92% yield), respectively. Addition of elemental sulfur to 9a and 14a-c leads to the Me(3)SnCl adducts of [bis(diisopropylamino)thioxophosphoranyl]cyanamide 10a (70% yield) and bis(cyanamido)thioxophosphoranes 15a-c (75-86% yield), respectively. Derivative 10a reacts with 1/2 equiv of (dichlorophenyl)oxophosphorane giving bis[bis(diisopropylamino)thioxophosphoranylcarbodiimido]phenyloxophosphorane (13a) (82% yield), whereas 15c reacts with 2 equiv of bis(diisopropylamino)chlorophosphane affording bis [bis(diisopropylamino)thioxophosphoranylcarbodiimido](diethylamino)thioxophosphorane (16c) (90% yield).