Low valent lead hydrides: synthesis and reactivity

与硅、锗和锡的氢化化学相比，铅的氢化化学还不太发达。p·p·鲍尔假定一种低价的有机氢化铅是形成双铅白的中间物。我们最近报道了第一个低价有机氢化铅的合成和表征。在这个项目中，我们想要开发低价铅氢化物的化学性质。为了探索有机取代基的空间体积对铅氢化物稳定性和反应性的影响，我们旨在合成具有不同空间保护的低价铅氢化物。除了从各自的有机卤化铅开始的亲核氢化物取代外，我们还想使用氢的还原消除作为合成途径。因此，我们将开发一种有机三氢化铅的制备路线。将研究低价铅氢化物与烯烃、炔烃或异腈等不饱和分子的化学反应。进一步探讨了铅氢化物的配位化学。最后，我们将研究低价铅氢化物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.