Über das reaktionsverhalten von (Germyl- und Stannyl-Imino) phosphoranen gegenüber metallalkylen

[(Trialkylgermy)imino]trialkylphosphoranes (I), (II)-like their silicon analogues-spontaneously form stable 1/1 addition compounds with trimethylaluminium, -gallium and -indium, of the type (III)-(VIII). Analytical and spectroscopic data ensure the composition and structures proposed for these products. The spectra provide information regarding relative acceptor and donor strengths of the components. The corresponding reactions of the [(trialkylstannyl)imino]trialkylphosphoranes (X), (XI) lead to heterolytic cleavage of the SnN bonds under mild conditions already, tetraalkylstannane and dimeric [(dimethylmetal)imino]trialkylphosphoranes, (XIII)-(XVIII), being formed. This is new evidence for the lability of SnN bonds as compared with GeN onds towards electrophilic reagents.