Thermodynamic study of the complexation of 1,6-dihydro-1-methyl-2-methylthio-5-nitroso-6-oxo-4-xylopyranosylaminopyrimidine with some metal ions

Abstract The acidic constant of 1,6-dihydro-1-methyl-2-methylthio-5-nitroso-6-oxo-4-xylopyranosylaminopyrimidine and the formation constants of its [ML − ] + and [ML 2 ] complexes (MMn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II)) at variable ionic strengths and temperatures, were determined and their values compared with those of 4-amino-1,6-dihydro-1-methyl-2-methylthio-5-nitroso-6-oxo-pyrimidine.