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用加温加压原位红外光谱法研究了YCCo_3(CO)_(?)(Y=H,C_3H_7,Ph,Cl)在低压醛化条件下的热稳定性及对1-己烯的醛化机理。升温过程中的光谱变化指出,这些簇在130℃,4.0MPa的合成气压力下至少部分分解生成Co_2(CO)_(?),最后降解为HCo(CO)_4。通过对1-己烯的醛化反应研究发现,该簇络合物对1-己烯的醛化反应机理相应於Co_2(CO)_(?)的反应机理。Y的电子效应对簇的稳定性有一定影响并进而影响其催化活性。
The thermal stability of YCCo_3 (CO) _ (?) (Y = H, C_3H_7, Ph, Cl) under low pressure hydroformylation and the hydroformylation of 1-hexene mechanism. The spectral changes during the heating process indicated that these clusters decomposed at least partially to form Co_2 (CO) _ (?) And eventually to HCo (CO) _4 under syngas pressure of 130 ℃ and 4.0 MPa. Through the hydroformylation of 1-hexene, it was found that the mechanism of hydroformylation of 1-hexene by this cluster corresponds to the reaction mechanism of Co_2 (CO) _ (?). The electronic effect of Y has some influence on the stability of the cluster and thus its catalytic activity.