Synthesis, spectroscopic and thermal studies on platinum(II) complexes of 5-nitrosouracil derivatives
Three complexes were obtained during reactions of 6-amino-1-methyl-5-nitrosouracil, 6-methylamino-1-methyl-5-nitrosouracil and 6-methylamino-1-benzyl-5-nitrosouracil with K2PtCl4. The complexes were isolated in good yields as powdery precipitates and characterized through elemental analysis, infrared and 1H NMR spectroscopies, and thermal analysis. The pyrimidine bases easily substitute chloro ligands as a neutral monodentate ligand form. The exocyclic oxygen atoms are the probable binding sites rather than ring or exocyclic nitrogen atoms. trans Square planar structures were proposed in all cases.
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