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The new complexes cis-Mo 2 O 5 (ahp) 2 , trans-UO 2 (ahp) 2 , ReO(PPh 3 )(ahp) 2 I, M(ahp) 2 , and M H (ahp) 3 (M Co, Cu, Pd; M H Fe, Ru, Rh; ahp 2-amino-3-hydroxypyridine) have been prepared. The ligand binds via the deprotonated hydroxy oxygen atom and the amino nitrogen atom to the central ion. Infrared, Raman, 1 H NMR, and electronic spectra of the complexes have been recorded. 2-Amino-3-hydroxy pyridine was found to behave as an inhibitor with respect to the corrosion of aluminum and copper in acidic solutions.

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