Observation of Three Intervalence-Transfer Bands for a Class II–III Mixed-Valence Complex of Ruthenium

Authors

  • Reginaldo C. Rocha Dr.,

    1. Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Mail Stop G755, Los Alamos, NM 87545, USA, Fax: (+1) 505-665-9030
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  • Francisca N. Rein Dr.,

    1. Physical Chemistry and Applied Spectroscopy, Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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  • Hershel Jude Dr.,

    1. Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Mail Stop G755, Los Alamos, NM 87545, USA, Fax: (+1) 505-665-9030
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  • Andrew P. Shreve Dr.,

    1. Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Mail Stop G755, Los Alamos, NM 87545, USA, Fax: (+1) 505-665-9030
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  • Javier J. Concepcion Dr.,

    1. Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599-3290, USA, Fax: (+1) 919-962-2388
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  • Thomas J. Meyer Dr.

    1. Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599-3290, USA, Fax: (+1) 919-962-2388
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  • This work was supported by the UCDRD program (at LANL) and the NSF (at UNC; grant CHE554561). The assistance of Dr. S. Iyer (mass spectrometry) is gratefully acknowledged.

Abstract

original image

Multiple intervalence-transfer (IT) absorptions (see picture) appear in the near-IR/IR spectra of the mixed-valence complex [Cl3RuII(tppz)RuIIICl3] (tppz=tetrakis(2-pyridyl)pyrazine), whose X-ray crystal structure and electronic and vibrational spectroscopic features indicate localized-to-delocalized (Class II–III) behavior.

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