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Original Articles

Synthesis and Spectral Characterization of Metal Complexes of 1‐(2‐Hydroxy‐4‐methylphenylazo)‐2‐naphthol

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Pages 1843-1853 | Received 19 Dec 2002, Accepted 24 Jun 2004, Published online: 16 Nov 2010
 

Abstract

The o,o′‐dihydroxyazo dye, 1‐(2‐hydroxy‐4‐methylphenylazo)‐2‐naphthol (HMPAN), and its metal complexes (chromium, cobalt, and iron) having the ligand to metal ratio 2:1 have been synthesized, but manganese forms a 1:1 complex. The spectral characterization of HMPAN and its complexes by IR, UV–VIS, 1H and 13C NMR spectroscopic techniques, and elemental analyses are reported.

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