在二氯甲烷中, 化合物(p-cymene)Ru2(μ-Se2)(S2C2B10H10)2 (1)与l-乙炔基环己醇反应得到加成产物(p-cymene)-Ru2(μ-Se2)(S2C2B10H10)2 (R1C=CR2) [R1=H, R2=(cyclo-C6H10)(OH) (2); R1=(cyclo-C6H10)(OH), R2=H (3)]. 化合物2和3在氯仿中加热回流可脱水分别生成4和5, 二者在甲苯中进一步加热回流可实现相互转化. 所有化合物中, 炔烃碳碳三键选择性地加成在两个不同的(S2C2B10H10)2-配体的硫原子[S(2)和S(3)]上, 从而使混合价双钌中心RuII/RuIV (18e/16e)转变为单一价态的RuII/RuII (18e/18e), 得到进一步稳定的配合物. 所有化合物通过元素分析、质谱、核磁共振进行了表征, 并解析了化合物2的X衍射单晶结构.
Treatment of (p-cymene)Ru2(μ-Se2)(S2C2B10H10)2 (1) with (cyclo-C6H10)(OH)C≡CH in dichloromethane led to addition complexes, (p-cymene)Ru2(μ-Se2)(S2C2B10H10)2(R1C=CR2) [R1=H, R2=(cyclo-C6H10)(OH) (2); R1=(cyclo-C6H10)(OH), R2=H (3)]. In boiling chloroform both 2 and 3 spontaneously lose water to generate two geometrical isomers (p-cymene)Ru2(μ-Se2)(S2C2B10H10)2 (R1C=CR2) [R1=H, R2=cyclo-C6H9 (4); R1=cyclo-C6H9, R2=H (5)], respectively. Complexes 4 and 5 could be interconverted in refluxing toluene. In all products alkyne addition occurs at the sulfur atoms of the two individual chelating 1,2-dicarba-closo-dodecaborane-1,2-dithiolate ligands that leads to a change of the 16e Ru(IV) center in 1 to the 18e Ru(II) center in 2~5. The molecular structure of complex 2 has been determined by X-ray crystallography. All these complexes were characterized by elemental analysis, mass and NMR spectroscopy.