Paramagnetic Resonance of Radicals of Some Aromatic Vinyl Compounds. II

Abstract

Paramagnetic resonance absorption of the radicals of 1,1-diphenylethylene, stilbene and 1,4-diphenylbutadiene in tetrahydrofuran solution was investigated at room temperature. In diphenylethylene (DPF) radicals two kinds of spectra were observed corresponding to two states of the radicals; one is the DPE monomer anion and the other DPE polymer anion. In connection with the experimental results in the case of styrene, α-methylstyrene and p-methylstyrene described in the preceding paper, the process of polymerization of some aromatic vinyl compounds was discussed.