Catalytic oxidation of the (hydroxymethyl)chromium(III) ion by the superoxochromium(III) ion. [CrO sub 2 sup 2+]

Journal Article · Wed Oct 30 04:00:00 EST 1991 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00022a006· OSTI ID:7017608

Scott, S L; Bakac, A; Espenson, J H ^[1]

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1. Iowa State Univ., Ames (United States)

The superoxochromium(III) ion, CrO{sub 2}{sup 2+}, is an efficient catalyst for autoxidation of the (hydroxymethyl)chromium(III) ion, CrCH{sub 2}OH{sup 2+}, in aqueous solution. The reaction involves one-electron oxidation of CrCH{sub 2}OH{sup 2+} by CrO{sub 2}{sup 2+}, k = 137 M{sup {minus} 1} s{sup {minus} 1}, to yield Cr{sup 2+}, CH{sub 2}O, and the novel (hydroperoxo)chromium(III) ion, CrO{sub 2}H{sup 2+}. The Cr{sup 2+} produced reacts rapidly with O{sub 2} to regenerate the catalyst, CrO{sub 2}{sup 2+}. When oxygen is depleted, the Cr{sup 2+} reacts instead with CrO{sub 2}{sup 2+} to produce the chromyl(IV) ion, CrO{sup 2+}. This initiates a chain reaction that rapidly consumes the remaining CrO{sub 2}{sup 2+} and a stoichiometric amount of CrCH{sub 2}OH{sup 2+}.

• OSTI ID: 7017608
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 30:22; ISSN 0020-1669; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALDEHYDES
AQUEOUS SOLUTIONS
CATALYTIC EFFECTS
CHARGED PARTICLES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CHROMIUM COMPOUNDS
CHROMIUM IONS
DISPERSIONS
ELEMENTS
FORMALDEHYDE
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
IONS
KINETICS
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN
PERCHLORIC ACID
REACTION KINETICS
SOLUTIONS
SPECTRA
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET SPECTRA