J . M. SALAS-PEREGRIN, M. N. MORENO-CARRETERO, and E. COLACIO-RODRIGUEZ. Can. J. Chem. 63, 3573 (1985). The preparation and spectral properties of the complcxes of 6-amino-3-methyl-5-nitroso-uracil (HAMNU) with Zn(ll), Cd(ll), and Hg(l1) ions are reported. The results suggest that the exocyclic oxygen and nitrogen atoms have a much greater tendency to bind to these ions than the ring nitrogen atoms. In Zn(1l) and Cd(l1) complexes, the ligand is N,O-coordinated through the 5-nitroso and 6-oxide groups of (AMNU) in nitrosophenolic anionic form. In the Hg(l1) complexes, the ligand seems to be bound in neutral form. Tetrahedral structures are proposed in all cases. [Traduit par le journal]
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