摘要
用光度法研究了非对称取代四苯基卟啉蒽醌化合物与金属钴 (Ⅱ )离子在DMF溶剂中配位反应的动力学以及镉 (Ⅱ )离子对该反应的催化作用 ,探讨了温度以及取代基的电子效应和空间位阻对反应速率的影响 ,并用半经验量子化学计算方法PM3计算了卟啉分子的前线轨道能量差ΔE和卟啉环中两个氮原子( =N -)的净电荷 。
Kinetics of coordinate reaction of asymmetric porphyrin-aminoamthraquinone compounds with cobalt(Ⅱ) in DMF has been studied spectrophotomertry in the presence of cadmium(Ⅱ) ion.The infuence of temperature and electron effect and steric hindrance of substituting group on apparent rate constants were discussed .The porphyrin molecules were calculated by using semiempirical PM3 method. Experimental data and theoretical discussion showed that degree of apparent rate constant depend on net charge at =N- atom and frontier orbital energy difference of porphyrin.
出处
《湖北师范学院学报（自然科学版）》
2003年第3期20-23,共4页
Journal of Hubei Normal University(Natural Science)
