Spectrophotometric Studies of Ethyl Xanthate Complexes in Aqueous Solutions

Abstract The stability constants of ethyl xanthate complexes of cadmium(II), zinc(II), nickel(II), and cobalt(II) were determined spectrophotometrically in aqueous solutions. Complexes with the 1 : 1 composition, M(EX)+, were found in all cases; the stability constants of these metal complexes were calculated to be 1.2×104, 5.2×10, 4.4×10, and 1.1×10 for Cd(EX)+, Zn(EX)+, Ni(EX)+, and Co(EX)+ respectively at an ionic strength of 1.0 and at 25°C. These values were then compared with the stability constants of other metal complexes.