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Science 20 August 2004:
Vol. 305. no. 5687, pp. 1136 - 1138
DOI: 10.1126/science.1101356
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Reports

Decamethyldizincocene, a Stable Compound of Zn(I) with a Zn-Zn Bond

Irene Resa,1 Ernesto Carmona,1* Enrique Gutierrez-Puebla,2 Angeles Monge2

Unlike mercury, which has an extensive +1 oxidation state chemistry, zinc usually adopts the +2 oxidation state. Decamethyldizincocene, Zn2({eta}5-C5Me5)2, an organometallic compound of Zn(I) formally derived from the dimetallic [Zn–Zn]2+ unit, has been isolated from the low-temperature (–10°C) reaction of Zn(C5Me5)2 and Zn(C2H5)2 in diethyl ether. X-ray studies show that it contains two eclipsed Zn({eta}5-C5Me5) fragments with a Zn–Zn distance (± standard deviation) of 2.305(±3) angstroms, indicative of a metal-metal bonding interaction.

1 Instituto de Investigaciones Químicas–Departamento de Química Inorgánica, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Américo Vespucio 49, 41092 Sevilla, Spain.
2 Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Campus de Cantoblanco, 28049 Madrid, Spain.

* To whom correspondence should be addressed. E-mail: guzman{at}us.es

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