How big is a Cp?

Ferrocene is a sandwich complex of two cyclopentadienyl (Cp) units bound to an Fe centre and is probably the most famous organometallic compound containing a Cp ligand. There are a huge variety of organometallic complexes with a range of metal centres and ligands and there is a great deal of interest in their structural, chemical and physical properties.

This Hot Article details the preparation of a series of [(η7-C7H7)Zr(η5-L)] (L = Cp and Ind) complexes and their structural characterisation. The authors use this information to develop a system to measure the steric bulk of Cp ligands……… how big is a Cp?

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How big is a Cp? Cycloheptatrienyl zirconium complexes with bulky cyclopentadienyl and indenyl ligands
Andreas Glöckner, Heiko Bauer, Miyuki Maekawa, Thomas Bannenberg, Constantin G. Daniliuc, Peter G. Jones, Yu Sun, Helmut Sitzmann, Matthias Tamm and Marc D. Walter
Dalton Trans., 2012, Advance Article
DOI: 10.1039/C2DT12132H

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