半夹芯16电子碳硼烷有机金属化合物的反应性研究进展

Advance in the Reactivity of Half-sandwich 16e Carborane Organometallic Compounds

邻位碳硼烷o-C2B10H12中CH单元上的H原子具有一定的弱酸性,可以和强碱n-BuLi反应,生成含有金属离子的盐,该盐再与硫族元素发生插入反应,形成锂盐Li2E2C2B10H10(E=S,Se),据此可以生成半夹芯16e碳硼烷有机金属化合物。这些半夹芯16e碳硼烷有机金属化合物金属中心电子的不饱和性,两个M-E键具有一定的化学活性,以及碳硼烷笼子中的B(3)/B(6)位的B-H键能够被活化,可以控制在不同的反应条件下与一系列供电子配体发生反应,生成许多结构新颖的产物。本文综述了半夹芯16e碳硼烷有机金属化合物的反应性研究进展。

The hydrogen atoms in the CH units of the o- C2B10H12 are weakly acidic and can react with strong base n- BuLi to form a salt containing metal ions. The salt reacts with sulfur group elements to form lithium salt Li2FaC2B10H10 （E = S, Se）. Li2E2C2BloHlo can further be converted into half- sandwich 16e carborane organometallic compounds. The metal centers of these half- sandwich 16e carborane organometallic compounds are coordinately unsaturated, two M - E bends are reactive and two B - H bonds at the B（3）/B（6） sites of the carborane cage are potentially reactive with activated. As a result, they can react with a series of electron - donating ligands to give a lot of structurally novel products under diffirent conditions. The paper reviews the reactivity of half- sandwich 16e carborane organometallic compounds.