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Organometallic Heterocubane Clusters with Co–O and Co–S Framework

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Abstract

The reaction of [{(η5-Me5C5)Co}2(μ-η6:η6-toluene)] with water under different conditions leads to formation of the clusters [{(η5-Me5C5)Co}3(μ3-O)2] (1), [{(η5-Me5C5)Co}4(μ3-OH)4] (2) and [{(η5-Me5C5)Co}3(μ3-OH)4]2Co (3), whereas its reaction with hydrogen sulfide leads to [{(η5-Me5C5)Co}3(μ3-S)4]Co(μ3-S)2[(η5-Me5C5)Co]2 · Et2O (4). 1, 2 and 4 were characterized by single crystal X-ray diffraction. 1 is composed of a central Co3O2 unit, with two O2- units in an apical postion. The three cobalt atoms form a regular triangle with Co–Co distances of 2.438(2) Å, and the two oxygen atoms are located in apical positions of the triangular arrangement. The pentamethylcyclopentadienyl (Cp*) ligands are terminally bonded to the Co atoms in a η5-fashion. The Co and O atoms of 2 form a cubane-type Co4O4 cluster, with η5-bonded Cp* ligands. The central unit of 3 consists of a Co7O8 double cubane framework. Two Co4O4 cluster sharing a common corner (Co atom). Each of the other six Co atoms of the double cubane bound terminally a Cp* ligand. 4 is composed of a [{(η5-Me5C5)Co }2(μ3-S)4](μ3-S)2[(η5-Me5C5)Co]2 and an ether molecule. 4 contains a central Co4S4 cubane-like unit. One of the four Co atoms is bonded via two μ3-S atoms to two additional (η5-Cp*Co) units. The other three Co atoms are η5-coordinated to a Cp* ligand.

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Acknowledgements

Support by the Deutsche Forschungsgemeinschaft (DFG) and Technische Universität Darmstadt is acknowledged with gratitude.

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Authors and Affiliations

  1. Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstraße 18, Darmstadt, 64287, Germany

    Shengli Guo, Ralf Hauptmann & Jörg J. Schneider

  2. Dipartimento di Chimica, Università di Siena, Via Aldo Moro, Siena, 53100, Italy

    Serena Losi & Piero Zanello

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  1. Shengli Guo
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  2. Ralf Hauptmann
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  3. Serena Losi
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  4. Piero Zanello
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  5. Jörg J. Schneider
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Correspondence to Jörg J. Schneider.

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Dedicated to Prof. Günter Schmid on the occasion of his 70th birthday

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Guo, S., Hauptmann, R., Losi, S. et al. Organometallic Heterocubane Clusters with Co–O and Co–S Framework. J Clust Sci 18, 237–251 (2007). https://doi.org/10.1007/s10876-006-0100-y

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