杯芳烃的配位化学（6）水溶性杯［8］芳烃与Sc^（3＋）、Y^（3＋）和La^（3＋）的配位化学研究

COORDINATION CHEMISTRY OF CALIXARENES (6) STUDY ON METAL COMPLEXES OF WATER-SOLUBLE CALIXARENES WITH Sc￣(3+),Y￣(3+),La￣(3+)

本文首次报道了八对碘酸钠八羟基羰基甲氧基杯［８］芳烃的酸离解常数测定结果，还以ｐＨ滴定法测得该试剂与Ｓｃ（３＋）、Ｙ（３＋）和Ｌａ（３＋）各级配合物的稳定常数，首次发现它们能形成ＭＨｎＬ（ｎ＝１～７）配合物。

A pH--potentiometric titration method has been used to determine the acid dissociation constants of octasulfonato--octakis (carboxy)calix[8] arene and cumulative stability constants of complexes of octasulfonato--octakis (carboxy) calix [8]arene with Sc3+, Y3+, La3+ at 30℃ and ionic strength I=0. 1. It has been found that ligand can form such coordination compounds as MHnL (n=1～7)with Sc3+,Y3+,La3+,which has not been reported up to now.