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Synthesis and Characterization of Cobalttelluride Clusters with the Cubic Body-Centered Co9Te6(CO)8 Core

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Abstract

Reduction of Cp′2NbTe2H (Cp′=tBuC5H4) with CH3Li results in a red-violet solution which reacts with Co2(CO)8 to give the neutral cluster {Cp′2Nb(CO)}2[Co9Te6(CO)8] (2) and a mixture of salts, from which [Na(THF)6][Co9Te6(CO)8] (4) was obtained by crystallization from THF in very poor yield, probably due to Na impurities in CH3Li. Clusters 2 (123 valence electrons) and 4 (122 valence electrons) possess hexacapped cubic Co@Co8 cores. The structure of 2 was identified by comparison of spectroscopic data with those of parent clusters: Two Cp′2Nb(CO) fragments are fixed at two opposite μ 4-Te bridges of the Co9Te6(CO)8 skeleton. A crystal structure determination of 4 shows this compound to contain discrete ions. Nearly equal diameters of ca. 10.5 Å for the [Co9Te6(CO)8]− anion and the octahedral [Na(THF)6]+ cation as well as electrostatic interactions between them and attractive C–H⋅⋅⋅O contacts may be responsible for the formation of layers throughout the crystal.

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  1. Institut für Anorganische Chemie, Universität Regensburg, D-93040, Regensburg

    Alexander Ebner, Joachim Wachter & Manfred Zabel

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  1. Alexander Ebner
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  2. Joachim Wachter
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  3. Manfred Zabel
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Correspondence to Joachim Wachter.

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Ebner, A., Wachter, J. & Zabel, M. Synthesis and Characterization of Cobalttelluride Clusters with the Cubic Body-Centered Co9Te6(CO)8 Core. Journal of Cluster Science 15, 163–174 (2004). https://doi.org/10.1023/B:JOCL.0000027400.90257.91

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  • DOI: https://doi.org/10.1023/B:JOCL.0000027400.90257.91

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