Low valent lead hydrides: synthesis and reactivity

低价铅：合成和反应性与硅、锗和锡的氢化物化学相比，铅氢化物化学的发展要少得多。P.P. Power假设低价有机氢化铅是形成二苯乙炔的中间体。我们最近报道了第一个低价有机铅氢化物的合成和表征。在这个项目中，我们想开发低价铅的化学。为了探索有机取代基的空间位阻对铅配合物稳定性和反应活性的影响，我们合成了具有不同空间位阻的低价铅配合物。除了从相应的有机卤化铅开始的亲核氢化物取代之外，我们还希望使用氢的还原消除作为合成途径。因此，我们将开发一条有机三氧化二铅的制备路线。低价铅的化学性质将在与烯烃、炔或异腈等不饱和分子的反应中进行研究。此外，还探讨了铅的配位化学。最后，我们将研究低价铅的去质子化和质子化。

Low valent lead hydrides: synthesis and reactivityLead hydride chemistry is much less developed in comparison to hydride chemistry of silicon, germanium and tin. P.P. Power postulated a low valent organo lead hydride as an intermediate in the formation of a diplumbyne. We reported recently the synthesis and characterization of the first low valent organolead hydride. In this project we want to develop the chemistry of low valent lead hydrides. In order to explore the influence of the steric bulkiness of the organic substituent on the stability and reactivity of lead hydrides we aim on synthesizing low valent lead hydrides with varying steric protection. Besides nucleophilic hydride substitution starting with the respective organo lead halides we also want to use the reductive elimination of hydrogen as a synthetic pathway. Therefore we will develop a preparative route for organo lead trihydrides. The chemistry of the low valent lead hydrides will be investigated in reactions with unsaturated molecules like alkenes, alkynes or isonitriles. Furthermore the coordination chemistry of lead hydrides is explored. Finally we will study the deprotonation and protonation of the low valent lead hydrides.