Metallo Borohydrides. II. Beryllium Borohydride
Metallo Borohydrides. II. Beryllium Borohydride
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DOI：
10.1021/ja01869a038
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发表时间：
1940-12
影响因子：
15
通讯作者：
Anton B. Burg;H. Schlesinger
中科院分区：
文献类型：
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作者：
Anton B. Burg;H. Schlesinger
铝和铍之间的相似性表明，乙硼烷与三甲基铝反应生成硼氢化铝 A1B3H12，其行为可能与二甲基铍类似。该反应不仅实际上导致分子式为 Be-B2H8 的稳定化合物的形成，而且其进行的方式使得可以认识到中间步骤的存在并分离副产物，这对于阐明这些金属硼氢化物的化学特性非常重要。二硼烷和二甲基铍之间反应的第一个产物是富含甲基的玻璃状材料。下一阶段是非挥发性流动液体。用乙硼烷进一步处理会产生不稳定、易升华的固体，其组成近似于化学式 CH3BeBH4。该材料与额外的乙硼烷剧烈反应，产生挥发性最终产物 BeB2H8 和少量非挥发性副产物，该副产物似乎是（Be-
The similarity between aluminum and beryl-lium suggests that diborane, which reacts with trimethylaluminum to producealuminum borohydride, A1B3H12, might behave in similar fashion toward dimethylberyllium. Not only does the reaction in question actually lead to the formation of a stable compound of molecular formula Be-B2H8, but it proceeds in such a way that it is possible to recognize the existence ofintermediate steps and to isolateby-products which are of im-portance in elucidating the chemical character of these metallo borohydrides. The first product of the reaction between di-borane and dimethylberyllium is a glassy material rich in methyl groups. The next stage is a non-volatile, mobile liquid. Further treatment with diborane leads to an unstable, easily sublimable solid which has a composition approximating the formula CH3BeBH4. This material reacts vigorously with additional diborane to give the volatile final product BeB2H8 and a small amount of a non-volatile by-product which appears to be (Be-