Synthesis, characterization, and reactivity of urea derivatives coordinated to cobalt (III). Possible relevance to urease

The synthesis and characterization of a cobalt complex containing N-(2-pyridylmethyl)urea, and of six complexes containing phenyl-substituted N-2-pyridylmethyl-N'-(X)phenylureas, where (X = 4-H, 4-CH3, 4-Br, 3-Cl, 4-CF3, and 4-NO2), are presented. The complexes were characterized by UV-vis, FIR, 1H NMR and 13C NMR spectroscopy and by elemental analysis.