摘要
用有机碱与亚硝酰基·四(对-硝基)苯基卟啉铁(Ⅱ)反应制备了系列六配位配合物(简称[T(p-NO_2)PP]Fe(Ⅱ)(NO)(B))。测定了电子光谱、红外光谱、电子顺磁共振光谱,并用光谱滴定法测定了配位平衡常数。结果表明,随着有机碱碱性和x键合能力增大,配位平衡常数增大,V_(NO)值下降,EPR参数g_2值降低。
A series of six-coordinated complexes was prepared in solution by reaction of para-substituted meso-tetraphenylporphinatoiron (Ⅱ) nitrosyl (abb. as [T(p-NO_2)PP]Fe (Ⅱ) (NO)) with some organic bases. The factors affecting the stability of title comphxed were studied. The stretching frequehcies of NO in these complexes were measured by IR spectra. EPR spectra of the complexes were determined at room temperature and 105 K, respectively. The results show that νNo decreased with incresement in basicity (pK_(?)) and π-bonding ability of organic bases, on the contrary, the ligation equilibrium constants increased.
出处
《吉林大学自然科学学报》
CSCD
1992年第2期88-92,共5页
Acta Scientiarum Naturalium Universitatis Jilinensis
关键词
卟啉铁
一氧化氮
六配位配合物
para-substituted meso-tetraphenylporphinatoiron (Ⅱ)
nitric oxide
organic bases
six-coordinated complexes
