Author/Authors :
Eichberg، نويسنده , , Michael J. and Kayser، نويسنده , , Bernd and Leonard، نويسنده , , Philip W. and Miljani?، نويسنده , , Ognjen ?. and Timofeeva، نويسنده , , Tatiana V. and Vollhardt، نويسنده , , K. Peter C. and Whitener، نويسنده , , Glenn D. and Yakovenko، نويسنده , , Andrey and Yu، نويسنده , , Yong، نويسنده ,
Abstract :
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.
thod constitutes a significant complement to currently existing strategies for the construction of persubstituted cyclobutadiene complexes.
Keywords :
Cyclopentadienyl complexes , Cyclobutadiene complexes , Pd-catalyzed coupling , Radial pentanuclear metal complexes
