M. Kawai, T. Ogawa, K. Hirota
Sep 1, 1964
Citations
0
Influential Citations
12
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The reactive complex produced by the reaction of trimethylaluminum with diphenylamine has been studied by the ultraviolet absorption and proton magnetic resonance methods. The ultraviolet absorption of the complex has shown two bands, at 228 mμ and 274 mμ, in cyclohexane. Proton magnetic resonance spectrum of the complex has been shown to consist of two groups of peaks, with an intensity ratio of approximately 5:3 and with chemical shifts of 2.90 p.p.m. and 10.58 p.p.m. These shifts have been assigned to phenyl protons and methyl protons respectively. In the mixture of trimethylaluminum and the complex, an exchange of methyl groups occurs. The structure of the complex has been concluded to be dimeric through two nitrogen bridges, as is shown in formula II.