中位-硝基八乙基卟啉钴的合成和性质研究  

Synthesis and Some Properties of Co(Ⅱ) Meso-Nitrooctaethylporphyrins

作　　者：龚良初 张太森[1] Gong Liangchu;Zhang Taisen(Department of Chemistry,East China Normal University,Shanghai)

机构地区：[1]华东师范大学化学系

出　　处：《高等学校化学学报》1985年第6期509-512,共4页Chemical Journal of Chinese Universities

摘　　要：本文报导了四种中位-硝基八乙基卟啉钴的合成以及电子吸收光谱、氧化还原半波电位和与某些配体的轴向配位平衡常数.并讨论了中位-硝基对这些性质的影响.对β-取代基卟啉类化合物已有大量的研究,但对中位取代基的金属卟啉类化合物(TPP类除外)研究得不多.The synthesis of four types of Co ( Ⅱ) meso-nitrooctaethylporphyrins are described;the data of their electronic absorption spectra, half wave potentials of redox and equillibrium constants of axial coordination with several ligands are reported. The more meso-nitro grouos the porphyrin has, the stronger the coordinating ability of the central cobalt ion achieves except with P∅_(s), which shows some steric effect. The half wave potentials of both oxidation and reduction are increased by electron withdrawing nitro groups. The cyclic voltammograms of these porphyrins show quasi reversible processes for oxidation and first ring reduction, only the latter being a two electron process.

关 键 词：电子吸收光谱 卟啉类化合物 轴向配位 平衡常数 八乙基卟啉 氧化还原 半波电位 取代基 

分 类 号：O62[理学—有机化学]