【摘要】 本文研究了十氢十硼酸和它的各种盐类的开笼反应,找到了合成十二氢十硼双二乙基硫醚络合物[B₁₀H₁₂·（Et₂S）₂]的两个新方法。其一,以十氢十硼酸为质子源,水为配位的Lewis碱,打开稳定的B₁₀H₁₀^2-笼状骨架,随后用二乙基硫醚处理所得的混合物;其二,以硫酸为质子源,二乙基硫醚为Lewis碱打开B₁₀H₁₀^2-的笼状骨架。与文献方法比较,缩短了反应时间,提高了硼的利用率。这些反应与裂解法制备十氢十硼酸双四乙基铵相结合,完成了一条不经过高毒性的十硼烷（14）,而由稳定的简单硼氢化合物制备1,2-二碳代-闭-十二硼烷（12）的新的实用路线。更多还原

【Abstract】 In this paper, the cage opening reaction of the decahydrodecaboric acid (H₂B₁₀H₁₀) and its various salts (M₂B₁₀H₁₀ where M⁺=K⁺, NH₄⁺, Et₄N⁺) has been investigated. Two new methods for the synthesis of bis（diethylsulfide） decaborane [B₁₀H₁₂（Et₂S）₂] were developed. The first method consists of opening of the stable cage skeleton (B₁₀H₁₀^2-) with decahydrodecaboric acid acting as proton source and water as the coordinating Lewis base followed by the treament of the resulting mixture with diethyl sulfide. In the second method, the cage skeleton (B₁₀H₁₀^2-) was opened with diethyl sulfide and sulfuric acid. In comparison with the previous reported methods, our methods has the advantage of being shorter in reaction time and better utilization of the borane part of the starting material. Combination of those reactions with the method of pyrolytic preparation of （Et₄N）₂B₁₀H₁₀ resulted in a new practical route for the synthesis of the 1, 2-dicarbo-closo-dodecaborane from simple and stable borohydrides without going through the highly toxic decaborane intermediate.更多还原