相同卟啉配体与不同金属离子形成的配合物其热力学稳定性取决于金属离子的性质。根据金属离子的结构及金属与卟啉的配位模式,作者提出了一个判断金属卟啉稳定性大小的经验关系式,计算了一系列金属离子的稳定系数。稳定系数的大小与实验建立的金属卟啉稳定性的顺序基本一致。并由此得出同价和异价金属卟啉稳定性级别的统一数值标准。 The thermodynamic stability of a complex formed by the same porphyrin ligand with different metal ions depends on the nature of the metal ion. According to the structure of metal ions and the coordination mode between metal and porphyrin, the authors put forward an empirical relationship to determine the stability of metal porphyrins and calculated the stability coefficients of a series of metal ions. The size of the stability coefficient is consistent with the order of the stability of the metalloporphyrin established experimentally. And the uniform numerical standard of stability level of metalloporphyrin with the same price and different price was obtained.