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Synthesis and Characterization of New Os2 5+ and Os2 6+ Azido Complexes

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Abstract

Reaction of Os2(OAc)4Cl2 with an excess of HDPhF (HDPhF = N,N′-diphenylformamidine) gives a high yield of Os2(DPhF)4Cl2 (1), which can be converted to its azido analog, Os2(DPhF)4(N3)2 (3), by treatment with NaN3. We report a major improvement on the preparation of Os2(chp)4Cl (2; Hchp = 2-chloro-6-hydroxypyridine) by synthesizing the compound in the reducing solvent ethanol. Reaction of 2 with NaN3 affords the azido complex Os2(chp)4N3 (4). Compound 3 has been examined by X-ray crystallography, and has an Os–Os bond distance of 2.45 Å, suggesting a (π*)2 ground state for the molecule.

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Acknowledgment

We thank the University of Wisconsin for support of this project.

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Authors and Affiliations

  1. Department of Chemistry, University of Wisconsin—Madison, 1101 University Ave, Madison, WI, 53706, USA

    Paula M. B. Piccoli & John F. Berry

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  1. Paula M. B. Piccoli
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  2. John F. Berry
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Correspondence to John F. Berry.

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This paper is dedicated to Malcolm Chisholm on the occasion of his 65th birthday.

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Piccoli, P.M.B., Berry, J.F. Synthesis and Characterization of New Os2 5+ and Os2 6+ Azido Complexes. J Clust Sci 21, 351–359 (2010). https://doi.org/10.1007/s10876-010-0306-x

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