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首页> 外文期刊>Chemistry: A European journal >Stabilization of p-block organoelement terminal hydroxides, thiols, and selenols requires newer synthetic strategies
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Stabilization of p-block organoelement terminal hydroxides, thiols, and selenols requires newer synthetic strategies

机译：对p嵌段有机元素末端氢氧化物，硫醇和硒醇的稳定化需要更新的合成策略

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摘要

Metal hydroxides represent a very interesting and highly useful class of compounds that have been known to chemists for a very long time. While alkali and alkaline earth metal hydroxides (s-block) are commonplace chemicals in terms of their abundance and their use in a chemical laboratory as bases, the interest in Bronsted acidic molecular terminal hydroxides of p-block elements, such as aluminum and silicon, has been of recent origin, with respect to the variety of applications these compounds can offer both in materials science and catalysis. Moreover, these systems are environmentally friendly, relative to the metal halides, owing to their -OH functionality (resembling that of water). Design and conceptualization of the corresponding terminal thiols, selenols, and tellurols (M-SH, M-SeH, and M-TeH) offer even more challenging problems to synthetic inorganic chemists. This concept summarizes some of the recent strategies developed to stabilize these otherwise very unstable species. The successful preparation of a number of silicon trihydroxides a few years back resulted in the generation of several model compounds for meta I-silicates. The recent synthesis of unusual aluminum compounds such as RAl(OH)(2), RAl(SH)(2), and RAl(SeH)(2) with terminal EH (E=O, Se, or Se) groups is likely to change the ways in which some of the well-known catalytic conversions are being carried out. The need for very flexible and innovative synthetic strategies to achieve these unusual compounds is emphasized in this concept. [References: 72]
机译：金属氢氧化物代表了很长一段时间以来化学家已经知道的一类非常有趣且非常有用的化合物。就碱金属和碱土金属的氢氧化物（s嵌段）的丰度及其在化学实验室中作为碱的使用而言，是常见的化学品，但人们对p嵌段元素（如铝和硅）的布朗斯台德酸性分子末端氢氧化物感兴趣，关于这些化合物可以在材料科学和催化方面提供的各种应用，已经是最近的起源。而且，由于它们的-OH官能度（类似于水的官能度），相对于金属卤化物，这些系统对环境友好。相应的末端硫醇，硒醇和碲（M-SH，M-SeH和M-TeH）的设计和概念化为合成无机化学家带来了更具挑战性的问题。该概念总结了为稳定这些原本非常不稳定的物种而开发的一些最新策略。几年前成功地制备了许多三氧化硅，导致生成了几种间位硅酸盐的模型化合物。最近合成的带有末端EH（E = O，Se或Se）基团的异常铝化合物，例如RAl（OH）（2），RAl（SH）（2）和RAl（SeH）（2）改变一些众所周知的催化转化的方式。该概念强调了需要非常灵活和创新的合成策略来获得这些不寻常的化合物。 [参考：72]

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