The reactivity of sodium amidoborane (NaNH2BH3) as a Bronsted and Lewis base was studied systematically. The [NH2BH3]– anion can act as a proton acceptor or a hydride donor in different types of reactions. In reactions with very weak Bronsted acids such as cyclopentadiene, ammonia, and pyrazole, the [NH2BH3]– anion acts as a proton acceptor through the lone pair on N. The reactions of [NH2BH3]– with stronger Bronsted acids are complicated. In the reaction with ammonium chloride or acetic acid, [NH2BH3]– accepts a proton, reforming NH3BH3. However, in the reaction with HCl or methanol, N–B bond cleavage occurs. [NH2BH3]– can also donate hydride in some reactions. The possible mechanisms of these reactions are discussed.

中文翻译：

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氨基三氢硼酸钠 (NaNH2 BH3) 的布朗斯台德和路易斯碱行为

系统地研究了氨基硼烷钠 (NaNH2BH3) 作为布朗斯台德碱和路易斯碱的反应性。[NH2BH3]– 阴离子可以在不同类型的反应中充当质子受体或氢化物供体。在与非常弱的布朗斯台德酸（如环戊二烯、氨和吡唑）的反应中，[NH2BH3]– 阴离子通过 N 上的孤对充当质子受体。 [NH2BH3]– 与更强的布朗斯台德酸的反应很复杂。在与氯化铵或乙酸反应中，[NH2BH3]– 接受一个质子，重整为 NH3BH3。然而，在与 HCl 或甲醇的反应中，会发生 N-B 键断裂。[NH2BH3]– 在某些反应中也可以提供氢化物。讨论了这些反应的可能机制。