New complexes of Cu(II), Co(II), Ni(II), and Zn(II) with 1 phenyl 3 methyl 4 (4 phenyla zophenylaminomethylene)pyrazol 5 one (HL 1 ) and 1 phenyl 3 methyl 4 [4 methyl 2 (4 methylpheny lazo)phenylaminomethylene]pyrazol 5 one (HL 2 ) are synthesized using chemical and electrochemical methods and characterized by IR spectroscopy, 1 H NMR spectroscopy, X ray absorption spectroscopy, X ray diffraction analysis, and magnetic measurements. All complexes are mononuclear. The structures of HL 2 and related cobalt complex are determined by X ray diffraction analysis (CIF files CCDC nos. 1028957 and 1035847, respectively).
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