抄録
Spectroscopic studies were made on the formation of a complex salt between bivalent copper and compounds of p-hydroxyphenylazobenzene, Phenylazo-p-cresol, phenylazoresorcinol, and o, o′-dihydroxyazo series. These salts showed a fairly distinct difference in the ability to form a complex salt under the conditions of 1/6×10-4M concentration, 50% ethanol as a solvent, and boiling on a water bath for 30 minutes. The formation of a complex became difficult in the order of o, o′-dihydroxyazo compounds, phenylazoresorcinol, and phenylazo p-cresol. Phenyl rings having methoxyl, vitro, and other substituents were also found to have some difference in the formation of complex salts. Some discussions are made on the ease or difficulty in the complex formation by the kind of substituents present in compounds of azophenol series.
