1,8-Naphthalene-Linked Cofacial Dimeric Phthalocyanines

Authors

  • Prof. Clifford C. Leznoff,

    Corresponding author
    1. Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
    • Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
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  • Herman Lam,

    1. Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
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  • Dr. W. Andrew Nevin,

    1. Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
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  • Prof. Nagao Kobayashi,

    1. Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
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    • Visiting Professor from the Pharmaceutical Institute, Tohoku University, Japan.

  • Dr. Pavel Janda,

    1. Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
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    • Visiting research associate from the Heyrovsky Institute of the Czech Academy of Sciences, Prague, Czechoslovakia.

  • Prof. A. B. P. Lever

    1. Department of Chemistry, York University, 4700 Keele Street, North York, Ontario M3J 1P3 (Canada)
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  • This work was supported by grants from the Natural Sciences and Engineering Research Council (Ottawa) and the Office of Naval Research (Washington). It was also partially funded by the Midwest Center for Mass Spectroscopy and the National Science Foundation Regional Instrumentation Facility (Grant No. CHE 8211164).

Abstract

original image

Spectroelectrochemical investigation of the dicobalt complex 1 (M′[DOUBLE BOND] M″ [DOUBLE BOND] CoII), which was synthesized in only a few steps in good yield from simple starting materials, revealed the presence of the mixed-valence CoII–CoI complex as well as the CoI–CoI complex. The UV/VIS spectrum and the ESR results for the mixed-valence species indicate that the unpaired electron is delocalized. The electrocatalytic reduction of O2 on carbon electrodes coated with 1 occurs at −0.34 V (vs. SCE). R [DOUBLE BOND] CH2C(CH3)3.

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