荧光法测定冠醚络合物稳定常数的研究

高等学校化学学报 ›› 1980, Vol. 1 ›› Issue (1): 117.

荧光法测定冠醚络合物稳定常数的研究

王耕霖, 姜宗慧

南开大学化学系

收稿日期:1979-10-30 出版日期:1980-06-24 发布日期:1980-06-24

THE DETERMINATION OF THE STABILITY CONSTANTS OF METAL-CROWN ETHER COMPLEXES BY FLUORIMETRIC METHOD

Wang Genglin, Jiang Zonghui

Department of Chemistry, Nankai University

Received:1979-10-30 Online:1980-06-24 Published:1980-06-24

摘要/Abstract

摘要： 1967年C.J.Pedersen发表了关于冠醚(环聚醚)及其金属络合物的研究以来,冠醚对金属离子的特殊络合作用引起了人们极大的兴趣。碱金属冠醚络合物的发现不仅对络合物本身是个新的发展。

Abstract: The stability constaut of Tl⁺complex of 18-crown-6 iu methauol solution was determined by the fluorescent quenching of Tl⁺.Those of Na⁺,K⁺and La³⁺complexes were determined by competitive coordination.The values of logKfor Na⁺and K⁺measured by this method were found in excellent agreement with those determined potentiometrically using ion selective electrodes.The value of logKfor La³⁺was found to be higher than that determined calorimetricallg by Izatt.It is proposed that this discrepancy may be caused by the difference of water content in me-thanol.

TrendMD:

王耕霖, 姜宗慧. 荧光法测定冠醚络合物稳定常数的研究. 高等学校化学学报, 1980, 1(1): 117.

Wang Genglin, Jiang Zonghui . THE DETERMINATION OF THE STABILITY CONSTANTS OF METAL-CROWN ETHER COMPLEXES BY FLUORIMETRIC METHOD. Chem. J. Chinese Universities, 1980, 1(1): 117.