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Synthesis of MeL. This ligand was prepared by a procedure exactly the same as that for L by starting with 1.87 g (7.86 mmol) of benzil dihydrazone dissolved in 30 ml of anhydrous methanol and 1.8 ml (15.72 mmol) of freshly distilled 2-acetyl- pyridine to obtain yellow micro crystals of MeL. |
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