HETEROLEPTIC POLYPYRAZOLYLBORATE DERIVATIVES OF THE LANTHANIDE IONS - BIDENTATE LIGAND-EXCHANGE REACTIONS OF [LN(HB(C3N2H3)3)2(BETA-DIKETONATE)] (LN = CE, LA, SM, EU, YB, LU)

被引：24

作者：

MOSS, MAJ ^{[1
]}

JONES, CJ ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,DEPT CHEM,POB 363,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

POLYHEDRON | 1990年 / 9卷 / 05期

关键词：

D O I：

10.1016/S0277-5387(00)80278-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complexes [LnL2X] [L = HB(C3N2H3)3, X = PhC(O)CHC(Me)O and Ln = Y, La, Ce, Pr, Nd, Sm, Eu, Tb, Ho, Er, Yb, Lu or X = PhC(O)CHC(Ph)O and Ln = Y, La, Ce, Sm, Eu, Tb, Yb, Lu] have been prepared. In selected cases the intermolecular ligand exchange reactions involving the β-diketonate ligand have been studied by 1H NMR methods. For the sets of complexes [YbL2X] [X = OC(Ph)CHC(Ph)O or OC(Me)CHC(Me)O] with [LuL2X] and [LaL2X] with [CeL2X], ligand exchange was found to be slow on the 1H NMR time scale. A time-resolved study of the exchange of β-diketonate ligands between [SmL2X] and [EuL2X] gave results which were in accord with a model involving two opposing bimolecular reactions. © 1990.

引用

页码：697 / 702

页数：6

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