Photochemical pathways of the dimeric, mixed dimer, and monomeric sulfophthalocyanines of cobalt(III) and iron(II)

Journal Article · Sun Apr 01 04:00:00 EST 1979 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic50194a026· OSTI ID:6294247

Ferraudi, G

The photochemical reactivity of the dimeric, mixed dimer, and monomeric sulfophthalocyanines of cobalt (III) and iron (II) was investigated by steady-state and flash irradiations. The dimeric species photodissociated into sulfophthalocyanine radicals which were coordinated to either Co(III) or Fe(II) metal centers. Reactions of such intermediates were investigated by interception with alcohols and O/sub 2/. Also, photoredox reactions were detected with monomeric acidocobalt(III) sulfophtahlocyanines. These processes produce the oxidation of the acido ligands (Cl/sup -/, Br/sup -/, N/sub 3//sup -/, I/sup -/) and the reduction of the metal center. The photoredox dissociation was also investigated by using mixed dimers of the cobalt sulfophthalocyanines with Cr(bpy)/sub 3//sup 3 +/ and Ru(bpy)/sub 3//sup 2 +/. The photogeneration of sulfophthalocyanine radicals was observed as a general reaction which was produced by excitation of either the Cr(bby)/sub 3//sup 3 +/ or Ru(bpy)/sub 3//sup 2 +/ units in the mixed dimer. The nature of the reactive excited states involved in the various photochemical reactions of the sulfophthalocyanines of Co(II), Co(III), Cu(II), and Fe(II) is discussed.

• Research Organization: Univ. of Notre Dame, IN
• OSTI ID: 6294247
• Journal Information: Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 18:4; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CHEMICAL REACTIONS
CHEMISTRY
COBALT COMPLEXES
COMPLEXES
DATA
DATA FORMS
DECOMPOSITION
DYES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
IRON COMPLEXES
ISOLATED VALUES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
PHTHALOCYANINES
REDOX REACTIONS
TRANSITION ELEMENT COMPLEXES