本文用分光光度法研究了一种新的尾式卟啉铁氯化mesa-一[邻-(4-二乙氨基丁酰氨基)苯基]三苯基卟啉合铁(Ⅲ)[PFe(Ⅲ)Cl]与咪唑、苯骈咪唑、吡啶、3,5-二甲基吡啶、三乙胺、二乙胺、正丁胺的加合作用,测定了这些有机碱同卟啉铁的加合平衡常数。实验结果表明:咪唑类与卟啉铁作用一步生成2:1的加合物;吡啶类与卟啉铁作用分步生成1:1和2:1的加合物;胺类与卟啉铁作用只生成1:1的加合物,同时还发现胺类的平衡常数K与BH~+的酸常数K_a之间的关系式为 log K=6.45pK_a-66.87。 In this paper, a new tailed porphyrin iron (Ⅲ) [p- (4-diethylaminobutyrylamino) phenyl] triphenylporphyrin iron (Ⅲ) [PFe Ⅲ) Cl] with imidazole, benzimidazole, pyridine, 3,5-lutidine, triethylamine, diethylamine and n-butylamine. The addition of these organic bases to porphyrin iron Equilibrium constant. The experimental results show that the imidazoles and iron porphyrin produce one-step 2: 1 adduct in one step, the pyridine and porphyrin iron act stepwise to produce 1: 1 and 2: 1 adducts, and the amines interact with porphyrin iron Only 1: 1 adduct was formed. At the same time, it was also found that the relationship between the equilibrium constant K of amines and the acid constant K_a of BH ~ + was log K = 6.45pK_a-66.87.