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Issue 10, 2012
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Synthesis, reactivity and applications of zinc–zinc bonded complexes

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Abstract

The discovery of decamethyldizincocene [Zn25-Cp*)2] (Cp* = C5Me5), the first complex containing a covalent zinc–zinc bond, by Carmona in 2004 initiated the search for this remarkable class of compounds. Low-valent organozinc complexes can either be formed by ligand substitution reactions of [Zn25-Cp*)2] or by reductive coupling reactions of Zn(II) compounds. To the best of our knowledge, until now 25 low-valent Zn–Zn bonded molecular compounds stabilized by a variety of sterically demanding, very often chelating, organic ligands have been synthesized and characterized. There are two major reaction pathways of [Zn25-Cp*)2]: it can either react with cleavage of the Zn–Zn bond or by ligand substitution. In addition, upon reaction with late transition metal complexes, [Zn25-Cp*)2] was found to form novel intermetallic complexes with Cp*Zn and Cp*Zn2 acting as unusual one-electron donor ligands. Very recently, the potential capability of [Zn25-Cp*)2] to serve as a suitable catalyst in hydroamination reactions was demonstrated. Finally, the recent work on Cd–Cd bonded coordination compounds is reviewed.

Graphical abstract: Synthesis, reactivity and applications of zinc–zinc bonded complexes

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Article information


Submitted
15 Dec 2011
First published
01 Mar 2012

Chem. Soc. Rev., 2012,41, 3759-3771
Article type
Tutorial Review

Synthesis, reactivity and applications of zinc–zinc bonded complexes

T. Li, S. Schulz and P. W. Roesky, Chem. Soc. Rev., 2012, 41, 3759
DOI: 10.1039/C2CS15343B

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