Photochemistry of (5,10,15,20-tetraphenylporphyrinato)iron(III) halide complexes, Fe(TPP)(X)

Journal Article · Wed Feb 18 04:00:00 EST 1987 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00238a042· OSTI ID:6810400

Hendrickson, D N; Kinnaird, M G; Suslick, K S

The photochemistry of metalloporphyrins and related macrocycles is of intense current interest. Nonetheless, the photochemistry of ferric porphyrins and heme proteins remains largely unexplored and not well understood. The ability of Fe(III) porphyrins to act as catalysts for hydrocarbon oxidations with various oxidants suggested to us their possible use as photocatalysts. In this paper, they assign a near-ultraviolet absorption in Fe/sup III/(TPP)(X) (where X = F, Cl, Br, I, N/sub 3/; TPP = 5,10,15,20-tetraphenylporphyrinate(-2)) as a halide ligand-to-metal charge-transfer (LMCT) transition. Irradiation into this band leads to rapid photoreduction of the iron atom and dissociation of X/sup 0/. In the presence of O/sub 2/, photoinitiation of hydrocarbon oxidation occurs.

• Research Organization: Univ. of Illinois, Urbana
• OSTI ID: 6810400
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 109:4; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AROMATICS
CARBOXYLIC ACIDS
CATALYSTS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DATA
DISSOCIATION
ELEMENTS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
IRON
IRON COMPLEXES
LIGANDS
METALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PORPHYRINS
REDUCTION
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS