摘要
为了寻找溶剂的性质对冠醚配位化合物稳定性影响的规律性,用极谱法测定了冠醚15C5 在甲醇(MeOH) 和乙腈(MeCN) 、乙醇(EtOH) 和乙腈(MeCN)的混合溶剂中与Pb2+ ,Co2 + ,Ni2+ ,Cu2+ 等金属阳离子形成的配合物稳定常数logK,并进一步研究了溶剂的性质对配合物稳定性影响的规律性,得出了配合物的稳定常数log K与混合溶剂中乙腈的摩尔分数x 的关系.
In order to find the law of the influence of the solvent,polarographic is used to determine the stability constants of complexes of crown ether 15C5 with Pb 2+ ,Co 2+ ,Ni 2+ ,Cu 2+ in MeOH+MeCN,EtOH+MeCN mixtures,and the law of influence of solvent on stable constants is discussed.According to the experiment,the fact that the log K of each of the complexes increases with the increase of MeCN of the mixtures is found.There is a linear relationship between log K and the mole fraction of MeCN.
出处
《郑州工业大学学报》
1999年第4期56-58,共3页
Journal of Zhengzhou University of Technology