A SIMPLE SYNTHESIS OF DIMETALLIC ZIRCONIUM ALUMINUM COMPOUNDS CONTAINING PLANAR-TETRACOORDINATE CARBON

被引：30

作者：

ERKER, G ^{[1
]}

ALBRECHT, M ^{[1
]}

WERNER, S ^{[1
]}

NOLTE, M ^{[1
]}

KRUGER, C ^{[1
]}

机构：

[1] MAX PLANCK INST COAL RES,W-4330 MULHEIM,GERMANY

来源：

CHEMISCHE BERICHTE-RECUEIL | 1992年 / 125卷 / 08期

关键词：

ZIRCONIUM-ALUMINUM DIMETALLIC COMPLEXES; CARBON; PLANAR-TETRACOORDINATE; MU-ALKYNE COMPLEXES;

D O I：

10.1002/cber.19921250823

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Eta-2-Alkyne)(trimethylphosphane)zirconium complexes [alkyne = cyclohexyne (3a) or diphenylacetylene (3b)] react with diisobutylaluminium hydride at room temperature by PMe3 cleavage and addition of H-Al(isobutyl)2 to the in situ-generated (eta-2-alkyne)ZrCP2 intermediate to give the dimetallic Zr,Al compounds 4. These thermodynamically stable complexes contain a planar-tetracoordinate carbon center whose uncommon coordination geometry is stabilized by a combination of the sigma-donor interaction with both electropositive metals and the pi-conjugation of the Zr - C = C moiety.

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页码：1953 / 1956

页数：4

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