Synthesis and spectroscopic characterization of cobalt (II), nickel (II) and copper (II) complexes with ethyl-5-methyl-1-(2/-pyridyl) pyrazole-3-carboxylate

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The coordination mode of the title ligand, 1 ( synthesised for the first time and abbreviated as EMPyPzC and characterised by elemental analyses, mass, IR and 1H-NMR spectral parameters), is investigated by way of isolation of its solid complexes of CoII, NiII and CuII with various counter ions, X (X = Cl, Br, NO3, SCN, BF4, ClO4,

Synthesis; spectroscopy; electrochemistry; pyridyl-pyrazolyl carboxylate; bis-chelates; bi-dentate