16电子半夹心结构含硫碳硼烷钴配合物Cp^tCoS_2C_2B_(10)H_(10)的合成以及结构表征

Synthesis and Characterization of 16-Electron Half-sandwich Cobalt Complex with 1,2-Dichalcogenolate Carborane

八羰基二钴Co2(CO)8与叔丁基取代的环戊二烯反应,可以得到半夹心结构的羰基钴化合物CptCo(CO)2(2)(Cpt=η5-tBuC5H4),化合物(2)与元素碘进行反应可以被氧化成相应的钴的碘化产物CptCo(CO)I2(3).采用碳硼烷含硫锂化合物[(THF)3LiS2C2B10H10Li(THF)]2(1)与18电子半夹心结构羰基钴的碘化物CptCo(CO)I2(3)反应得到16电子半夹心结构化合物CptCoS2C2B10H10(4).表征了化合物(2),(3)和(4),并解析了配合物(4)的X-衍射的单晶结构.

The reaction of Co_(2)(CO)_(8) with butyl-substituted cyclopentadiene leads to half-sandwich cobalt complex Cp^(t)Co(CO)_(2)(2)(Cp^(t)=η^(5)-^(t)BuC_(5)H_(4)), which can be oxidized by I_(2 )to produce half-sandwich cobalt complex Cp^(t)Co(CO)I_(2)(3). The reaction of Cp^(t)Co(CO)I_(2)(3) with 1,2-dilithium dichalcogenolate carborane Li_(2)S_(2)C_(2)B_(10)H_(10 )(1) affords the stable 16-electron cobalt( III ) half-sandwich complex Cp^(t)CoS_(2)C_(2)B_(10)H_(10) (4). Complexes(2),(3)and(4) have been characterized by their IR, ()^(1)H-NMR, (()^(13)C-NMR) and EI-MS spectra. The molecular geometry of complex(4) has determined by X-ray diffraction structural analysis.