Untersuchungen zur Reaktionsfähigkeit der höheren Silylphosphane (me3Si)4P2, [(me3Si)2P]2PH, [(me3Si)2P]2P–Sime3 und (me3Si)3P7 |
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Authors: | G. Fritz,J. H rer,K. H. Scheider |
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Affiliation: | G. Fritz,J. Härer,K. H. Scheider |
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Abstract: | Investigations Concerning the Reactivity of the Higher Silylphosphanes (me3Si)4P2, [(me3Si)2P]2PH, [(me3Si)2P]2P—Sime3, and (me3Si)3P7 The reaction of (me3Si)2P? P(Sime3)2 1 in ether solutions (THF, monoglyme) with t-buLi (me ? CH3; t-bu ? (CH3)3C) yields (me3Si)3P, (me3Si)2PLi and Li3P7 via (me3Si)2P? P(Li) (Sime3) 4 . Already at ?40° (me3Si)3P2Li 4 decomposes yielding (me3Si)2PLi, Li3P7 and (me3Si)3P. The metallation of (me3Si)3P2H with t-buLi leads to the same results. t-buLi with [(me3Si)2P]2PH 2 in pentane forms [(me3Si)2P]2PLi, which reacts on with meCl or me3SiCl to [(me3Si)2P]2Pme or [(me3Si)2P]2PSime3, resp. On addition of monoglyme to a suspension of [(me3Si)2P]2PLi in pentane, or by treating [(me3Si)2P]2PH in ethers with t-buLi (me3Si)2PLi, Li3P7, (me3Si)3P, are formed. The same compounds are generated by reacting [(me3Si)2P]2P—Sime3 in ethers with t-buLi. The metallation of (me3Si)3P7 in ethers with t-buLi yields (me3Si)2PLi, (me3Si)3P, (t-bu)3P4?(Sime3), Li3P7 and a red solid. The formation of (me3Si)2P7Li is the first step of this reaction. |
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