Studies on Metal Chelate Compounds of Anthraquinone Derivatives

Part I. Magnesium Chelate Compounds of 1-Hydroxy and 1, 4-Dihydroxyanthraquinone

Abstract

Structures, absorption spectra, and stabilities of magnesium chelates of 1-hydroxyanthraquinone and 1, 4-dihydroxyanthraquinone were examined by the spectrophotometric method. 1-Hydroxyanthraquinone reacts with magnesium in alcoholic solution to form a 2: 1 chelate compound (I), while 1, 4-dihydroxyanthraquinone forms a 1: 1 chelate compound, which is probably a polymer (II).