| Abstract: | SiH- and SiCl-containing Silylphosphines rearrange acc. to equ. (1), (2). Equations (1) and (2) are not reversible, because there are cleavages acc. to equ. (3). (4). Also HSiCl3 cleaves H3Si? P(C2H5)2 acc. to equ. (5). Si-methyl-free, SiH-containing Silylphosphines disproportionateal ready at room temperature within a few months acc. to equ. (6), (7). H2SiP(C2H5)2]2 however, is stable under the same conditions. Si? CH3 containing silylphosphines such as CH3SiH2? P(C2H5)2, CH3SiP(C2H5)2]3 and similar ones are stable compounds which can be destilled. To prepare pure HSiP(C2H5)2]3, the side-reactions ace. to equ. (I) are avoided by reduction of the Sic1 groups with LiH. Reduction with LiAlH4 leads to a cleavage of the Si? P bond. |
