POLAROGRAPHIC BEHAVIOR OF THENOYLTRI-FLUOROACETONE (TTA) AND RELATED COMPOUNDS. ALKALINE CLEAVAGE OF TTA. COMPLEXATION OF TTA WITH BORATE. ANALYTICAL DETERMINATION OF TTA
Abstract
The absence in borate and phosphate buffers of a second polarographic wave (as is present with thenoyltrifluoroacetone (TTA) in chloride, acetate, and NH sub3 buffers) is attributed to the complexation of TTA with buffer components. The first polarographic wave is attributed to a 1-electron reduction of the carbonyl group adjacent to the trifluoromethyl group, followed by dimerization to form the pinacol. The second wave is caused by the reduction of the thenoyl carbonyl group to the carbinol. The diffusion current is shown to be a linear function of the concentration; optimum analytical results are secured in acetate buffer. Polarographic data indicated a zero-order reaction for the alkaline fission of TTA in NH sub3 buffer. Examination of the nature of the interaction between the B species and the carbonyl group adjacent to the triflouromethyl group indicated the complex is due to the formation of a 4-membered ring between B and the 2 hydroxyl group O's on the C of the hydrated carbonyl group.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 15, 1953
- Accession Number
- AD0005059
Entities
People
- Clarence M. Callahan
- Philip J. Elving
Organizations
- University of Michigan