Synthesis and chromogenic properties of some water-soluble 5-nitro-2-pyridylhydrazones.

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概要

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• Four new water-soluble hydrazones, α-(5-nitro-2-pyridyl)hydrazono-α-(2-quinolyl)-3-toluenesulfonic acid, α-(5-nitro-2-pyridyl)hydrazono-α-(2-thiazolyl)-3-toluenesulfonic acid, α-(2-benzothiazolyl)-α-(5-nitro-2-pyridyl)hydrazono-3-toluenesulfonic acid, and α-(2-benzimidazolyl)-α-(5-nitro-2-pyridyl)hydrazono-3-toluenesulfonic acid, were synthesized. Their proton dissociation constants were determined spectrophotometrically. The chromogenic properties of the synthesized hydrazones and their reactions with metal ions were investigated spectrophotometrically in detail. The results revealed that the synthesized hydrazones react with various metal ions including transition metal ions, especially with cadmium(II), nickel(II), and zinc(II) to form stable colored complexes with very large apparent molar absorptivities, so that they were found to be all very useful as highly sensitive spectrophotometric reagents.

• 公益社団法人 日本化学会の論文

著者

• Ishii Hajime

  Chemical Research Institute Of Non-aqueous Solutions Tohoku University

• Kohata Katsunori

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

• Kawamonzen Yoshiaki

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

• Odashima Tsugikatsu

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

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• Synthesis and chromogenic properties of some water-soluble 5-nitro-2-pyridylhydrazones.
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