THENOYLTRIFLUOROACETONE: POLAROGRAPHIC AND SPECTROPHOTOMETRIC BEHAVIOR, AND DISSOCIATION EQUILIBRIUM. MECHANISMS OF ELECTROCHEMICAL REDUCTION. Report No. 40

Technical Report · Mon Sep 15 04:00:00 EDT 1958

OSTI ID:4266898

Elving, P J; Grodzka, P G

Thenoyltrifluoroacetone (TTA) gives four polarographic waves over the usual pH range, whose presence and properties depend upon the pH, the specific buffer used and the buffer component concentration. The report of only two TTA waves in a previous study is due to the large pH intervals between measurements. Spectrophotometric examination of TTA solutions, before and after cortrolled potential electrolysis at a massive mercury cathode, has made possible an explanation of the complex polarographic behavior on the basis of the various tautomeric and acid-base equilibria involving TTA species including assignment of the polarographic waves to the various TTA species present. Spectrophotometry indicates that the observed variations in the polarographic behavior of TTA in different alkaline buffers is probably due to specific cata lytic effects of buffer components upon the specific rate constants for the conversion of ionized, nonreducible (at the potentials involved) TTA species to unionized, reducible species and not to borate complexation as previously suggested. (auth)

• Research Organization: Michigan. Univ., Ann Arbor
• NSA Number: NSA-13-003559
• OSTI ID: 4266898
• Report Number(s): AECU-3960
• Country of Publication: United States
• Language: English

Related Subjects

ACIDITY
ACIDS
BORON COMPLEXES
CATALYSIS
CATHODES
CHEMICAL REACTIONS
CHEMISTRY
ELECTROCHEMISTRY
ELECTROMAGNETIC WAVES
HYDROXIDES
MERCURY
ORGANIC COMPOUNDS
PHOTOMETRY
POLAROGRAPHY
REDUCTION
SPECTROSCOPY
TTA