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合成了十个通式为(RC_2R′)Co_2(CO)_(6-n)(PPh_3)_n的双核钴配合物,用m.p.,元素分析、IR和UV对它们进行了表征.讨论了配合物中Co核的电荷密度及RC_2R′的空间位阻对PPh_3取代配合物中CO反应的影响,研究了配合物的IR和UV谱,从成键角度探讨了特征吸收峰变化的原因。
Ten dinuclear cobalt complexes of general formula (RC_2R ’) Co_2 (CO) _ (6-n) (PPh_3) _n were synthesized and their structures were characterized by elemental analysis, IR and UV. The charge density of Co nucleus and the steric hindrance of RC_2R ’on the CO reaction in PPh_3 substituted complexes were studied. The IR and UV spectra of the complexes were investigated. The reason for the change of the characteristic absorption peak was discussed from the bond angle.