Radial (Tetracyclopentadienyl)Cyclobutadiene Pentametals

Michael J. Eichberg,Bernd Kayser,Philip W. Leonard,Ognjen S. Miljanic,Tatiana V. Timofeeva,K. Peter C. Vollhardt,Glenn D. Whitener,Andrey Yakovenko,Yong Yu

INORGANICA CHIMICA ACTA（2011）

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摘要

Radial (tetracyclopentadienyl)cyclobutadiene pentametals have been synthesized by the Pd-catalyzed coupling of cyclopentadienyltin or of (CpM)zinc reagents with (tetraiodocyclobutadiene)iron(tricabonyl). X-ray structural and NMR data reveal that, while these arrays are crowded, the substituents enjoy considerable rotational freedom.The method constitutes a significant complement to currently existing strategies for the construction of persubstituted cyclobutadiene complexes. (C) 2010 Elsevier B.V. All rights reserved.

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关键词

Cyclobutadiene complexes,Cyclopentadienyl complexes,Radial pentanuclear metal complexes,Pd-catalyzed coupling

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