OBSERVATIONS ON RARE EARTHS .31. FORMATION CONSTANTS OF TROPOLONE CHELATES OF TRIPOSITIVE IONS AT 25 DEGREES

被引：16

作者：

CAMPBELL, DL

MOELLER, T

机构：

[1] Noyes Chemical Laboratory, University of Illinois, Urbana

来源：

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY | 1969年 / 31卷 / 04期

关键词：

D O I：

10.1016/0022-1902(69)80156-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The stepwise formation constants (K) of the tropolonate chelates of the tripositive lanthanide ions and yttrium have been measured at 25° at ionic strength 0·100 M (KNO3). Values of K1, K2, and K3 were obtained for the ions La3+ through Eu3+ and values of K1, K2, K3, and K4 for the ions Gd3+ through Lu3+ and Y3+. Each of the four stepwise formation constants increases with decrease in crystal radii of the Ln3+ ions. The values for the yttrium chelates are consistent with the size of the Y3+ ion. Variations in the magnitudes of the constants are discussed. © 1969.

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页码：1077 / &

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