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Issue 22, 2012
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How big is a Cp? Cycloheptatrienyl zirconium complexes with bulky cyclopentadienyl and indenyl ligands

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Abstract

A combination of phase-transfer and traditional alkylation strategies has been employed to synthesise sterically encumbered 1,3-di(cyclohexyl) and 1,3-di(tert-butyl) substituted indenes in multi-gram quantities. These indenyl ligands and sterically demanding alkyl cyclopentadienyl ligands have been used to prepare a series of [(η7-C7H7)Zr(η5-L)] (L = Cp and Ind) complexes by straightforward salt metathesis between [(η7-C7H7)ZrCl(tmeda)] and the corresponding sodium indenide or cyclopentadienide. All of these Zr complexes have been characterized by elemental analysis, NMR spectroscopy and single crystal X-ray diffraction. The structural information derived from these studies was employed to evaluate the steric demand of these ligands in a realistic manner.

Graphical abstract: How big is a Cp? Cycloheptatrienyl zirconium complexes with bulky cyclopentadienyl and indenyl ligands

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Publication details

The article was received on 08 Nov 2011, accepted on 21 Dec 2011 and first published on 09 Feb 2012


Article type: Paper
DOI: 10.1039/C2DT12132H
Citation: Dalton Trans., 2012,41, 6614-6624
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    How big is a Cp? Cycloheptatrienyl zirconium complexes with bulky cyclopentadienyl and indenyl ligands

    A. Glöckner, H. Bauer, M. Maekawa, T. Bannenberg, C. G. Daniliuc, P. G. Jones, Y. Sun, H. Sitzmann, M. Tamm and M. D. Walter, Dalton Trans., 2012, 41, 6614
    DOI: 10.1039/C2DT12132H

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