MAGNETIC SPIN-EXCHANGE INTERACTIONS BETWEEN SEVERAL METAL CENTERS IN PARAMAGNETIC-COMPLEXES WITH NEW POLYNUCLEATING BRIDGING LIGANDS

被引:26
作者
AMOROSO, AJ [1 ]
MAHER, JP [1 ]
MCCLEVERTY, JA [1 ]
WARD, MD [1 ]
机构
[1] UNIV BRISTOL,SCH CHEM,BRISTOL BS8 1TS,AVON,ENGLAND
关键词
D O I
10.1039/c39940001273
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The polynucleating bridging ligands L(1) and H(3)L(2) were simply prepared via a Heck coupling of 4-vinylpyridine or 4-methoxystyrene with 1,3,5-tribromobenzene; in the trinuclear complexes of L(1) and L(2) with a paramagnetic (Mo(NO)(BH(C(3)HN(2)Me(2)-3,5)(3))Cl) moiety [BH(C(3)HN(2)Me(2)-3,5)(3) = tris(3,5-dimethylpyrazol-1-yl) hydroborate] at each binding site the EPR spectra demonstrate that all three unpaired electrons are in 'fast exchange' between all three metal centres
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页码:1273 / 1275
页数:3
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