论文部分内容阅读
合成了以水杨醛,邻香兰素与1,3-丙二胺及邻苯二胺缩合的希夫碱配体及钴(Ⅱ)的配合物CosalprH2O、CovanenH2O、Cosalophen2H2O、Cov-anophen2H2O.用元素分析,红外光谱进行了表征,通过测定配合物在正戊醇溶液中吸收氧气的体积,计算了氧合反应的化学计量比、平衡常数及热力学参数ΔH0,ΔS0.考察了温度、碱及配体结构对配合物载氧性质的影响,发现低温、强碱对配合物双氧亲和有利,配体的位阻和共轭效应对吸氧不利.
The complexes CosalprH2O, CovanenH2O, Cosalophen2H2O, Cov-anophen2H2O with Schiff base ligands and cobalt (Ⅱ) condensation of salicylaldehyde and o-vanillin with 1,3-propanediamine and o-phenylenediamine were synthesized. The elemental analysis and infrared spectra were used to characterize the oxygenation reaction. The stoichiometry, equilibrium constants and thermodynamic parameters ΔH0, ΔS0 of the oxygenation reaction were calculated by measuring the volume of oxygen absorbed by the complex in n-pentanol solution. The effects of temperature, base and ligand structure on the oxygen-carrying properties of the complex were investigated. It was found that the low temperature and strong base were favorable for the double oxygen affinity of the complex. The steric hindrance and the conjugate effect of the ligand were not good for oxygen absorption.