Abstract
AbstractA series of coordination complexes, [CuCl2(H2L)] (1), [Ni(HL)2]⋅4 CH3CH2OH (2), [Cu(H2L)(dipic)]⋅0.5 HOCH2CH2OH⋅ 2 H2O (3), and [Ni(H2L)(dipic)]⋅0.5 HOCH2CH2OH⋅2 H2O (4) (H2L=2,6‐di(5‐methyl‐1H‐pyrazol‐3‐yl)pyridine, H2dipic=2,6‐pyridinedicarboxylic acid) are synthesized from bipyrazolyl derivative ligands. All of the complexes have been characterized by elemental analysis, IR and UV/Vis spectroscopy, powder X‐ray diffraction, and single‐crystal X‐ray diffraction. Structural analyses reveal that the H2L ligand in complexes 1–4 connects with one metal center in a tridentate manner. In addition, these complexes are potential catalysts in cyclohexane (Cy) oxidation with an acidic mixture of HCl and lactic acid. A putative mechanism for Cy oxidation promoted by complex 2 is also proposed.
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