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Goeltz JC, Kubiak CP. Mixed valency across hydrogen bonds. J Am Chem Soc. 2010;132(49):17390-2doi: 10.1021/ja108841k.
Goeltz, J. C., & Kubiak, C. P. (2010). Mixed valency across hydrogen bonds. Journal of the American Chemical Society, 132(49), 17390-2. https://doi.org/10.1021/ja108841k
Goeltz, John C, and Kubiak, Clifford P. "Mixed valency across hydrogen bonds." Journal of the American Chemical Society vol. 132,49 (2010): 17390-2. doi: https://doi.org/10.1021/ja108841k
Goeltz JC, Kubiak CP. Mixed valency across hydrogen bonds. J Am Chem Soc. 2010 Dec 15;132(49):17390-2. doi: 10.1021/ja108841k. Epub 2010 Nov 18. PMID: 21087020.
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J Am Chem Soc. 2010 Dec 15;132(49):17390-2. doi: 10.1021/ja108841k. Epub 2010 Nov 18.

Mixed valency across hydrogen bonds.

Journal of the American Chemical Society

John C Goeltz, Clifford P Kubiak

Affiliations

  1. Department of Chemistry and Biochemistry, University of California-San Diego, 9500 Gilman Drive, M/C 0358, La Jolla, California 92093-0358, USA.

PMID: 21087020 DOI: 10.1021/ja108841k

Abstract

An oxo-centered triruthenium cluster with one pyridine-4-carboxylic acid ligand forms a mixed valence monoanionic dicarboxylic acid dimer upon partial reduction. Dimerization is not observed in DMSO or in the deprotonated carboxylate complex. Infrared spectroscopy reveals the mixed valence dimer as a charge localized species, and UV/vis/NIR spectroscopy suggests a large stabilization of the ground state by mixed valency across hydrogen bonds, on the order of 2500 cm(-1), or 7 kcal/mol, relative to the hydrogen bonded but isovalent fully reduced dimer. The stabilization is a combination of hydrogen bonding and electronic coupling.

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