Charge-transfer and Proton-transfer in the Formation of Molecular Complexes. VI. 3,3′,5,5′-Tetranitrobiphenyl-4,4′-diol Complexes with Aromatic Amines

概要

論文の詳細を見る
The 3,3′,5,5′-tetranitrobiphenyl-4,4′-diol complexes with twenty-eight aromatic monoamines were prepared and characterized on the basis of their compositions and vibrational and electronic spectra. Many amines were found to form yellow-colored complexes with a 1 : 1 composition and orange- or red-colored complexes with a mole ratio of 2 : 1 or higher. The former complexes appeared to be salts formed by means of the proton-transfer from the diol to the amine molecule, while the latter appeared to be complexes of a new type where charge-transfer and proton-transfer interactions simultaneously operate. The deep coloration of the latter complexes was interpreted in terms of a charge-transfer interaction between the anion derived from the diol and the second monoamine molecule. Furthermore, the complexes with ten aromatic diamines were examined. The 1 : 1 <I>o</I>-dianisidine complex was of particular interest in that it is either of the charge-transfer type or of the proton-transfer type, depending upon the preparative conditions.
公益社団法人日本化学会の論文