Magnetic and structural studies of copper-lanthanoid complexes; The synthesis and structures of new Cu(3)Ln complexes of 6-chloro-2-pyridone (Ln=Gd, Dy and Er) and magnetic studies on Cu2Gd2, Cu4Gd2 and Cu3Gd complexes

被引：103

作者：

Benelli, C ^{[1
]}

Blake, AJ ^{[1
]}

Milne, PEY ^{[1
]}

Rawson, JM ^{[1
]}

Winpenny, REP ^{[1
]}

机构：

[1] UNIV EDINBURGH,DEPT CHEM,EDINBURGH EH9 3JJ,MIDLOTHIAN,SCOTLAND

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 1995年 / 1卷 / 09期

关键词：

copper compounds; exchange coupling; heterometallic compounds; lanthanide compounds; magnetic properties; structure elucidation;

D O I：

10.1002/chem.19950010908

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis and structural characterisation of three copper-lanthanoid complexes are reported. The compounds, of general formula [Cu(3)M(chp)(8)-(NO3)(S)][M = Gd, S = H2O in 2; M = Dy, S = H2O in 3; M = Er, S = (H2O)(0.5)(MeOH)(0.5) in 4; chp = anion of 6-chloro-2-pyridone], are made by reaction of [Cu-2(chp)(4)] (1) with the hydrated lanthanoid nitrate salt in methanol. Structural studies reveal the three copper atoms lie in an approximate hemisphere about a central lanthanoid atom. Magnetic studies on 2 and two further Cu-Gd complexes show ferromagnetic coupling between the 3d and 4f metals. Consideration of these results along with magnetic data previously reported for Cu-Gd compounds leads to a correlation between the magnitude of this exchange coupling and the exponential of the Cu ... Gd distance. This is the first magneto-structural correlation reported for mixed d-block/f-block metal complexes.

引用

页码：614 / 618

页数：5