THE STRUCTURE OF O-ARYLMERCURY DERIVATIVES OF DIHYDROXY-9,10-ANTHRAQUINONES AND THEIR REACTIONS WITH ANIONS

The structure of mono- and di-O-arylmercury-derivatives of quinizarin (1,4-dihydroxy-9,10-anthraquinone) and anthrarufin (1,5-dihydroxy-9,10 -anthraquinone) and their reactions with Br-, Cl-, OH-, and (BuO-)-Bu- t anions in the solid state and in aprotic solvents were examined by v ibrational and electron spectroscopy. These reactions result in cleava ge of the O-Hg bond. The formation of ions or contact ion pairs depend s on the size and nature of the counterion; quinizarin dianions give v ery strong ion pairs with K+ cations, which do not cleave in DMSO. The electronic structure of mono- and dianions of the compounds studied i s discussed.