The nucleophilic addition reactions of primary and secondary amines to the ethylnitrilium derivative of nido-carborane 10-EtC≡N-7,8-C₂B₉H₁₁ were studied and a series of new nido-carboranyl amidines 10-EtC(N(R)R’) = HN-7,8-C₂B₉H₁₁ was prepared. It was found that the nucleophilic addition of primary amines to 10-EtC≡N-7,8-C₂B₉H₁₁ leads to mixtures of E- and Z-isomers, whereas the addition of secondary amines results in the formation of solely E-isomers. The crystal molecular structures of E-10-EtC(NEt₂) = HN-7,8-C₂B₉H₁₁ and E-10-EtC(NС₄H₈O) = HN-7,8-C₂B₉H₁₁ were determined by single crystal X-ray diffraction study.

伯和仲胺的对的ethylnitrilium衍生物的亲核加成反应巢-carborane 10EtC≡N-7,8--C ₂乙₉ ħ ₁₁进行了研究和一系列新的巢-carboranyl脒10等（N（ R）R’）＝ HN-7，8-C ₂ B ₉ H ₁₁制备。已发现，亲核加成伯胺〜10EtC≡N-7,8--C ₂乙₉ ħ _11所导致的混合物ë -和Ž -异构体，而在单独的形成的另外的仲胺的结果Ë-异构体。的晶体分子结构Ë -10-ETC（NET ₂）= HN-7,8--C ₂乙₉ ħ ₁₁和Ë -10-ETC（NС ₄ ħ ₈ O）= HN-7,8--C ₂乙通过单晶X射线衍射研究确定₉ H ₁₁。