Synthesis and Properties of Tris(β-diketonato)bismuth(III) Complexes by the Reaction Using NaOCN as Base

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  • ECHIGO Masatoshi
    Department of Industrial Chemistry, Faculty of Engineering, Science University of Tokyo; Kagurazaka, Shinjuku-ku, Tokyo 162-8601 Japan
  • TAKAO Ryoji
    Department of Industrial Chemistry, Faculty of Engineering, Science University of Tokyo; Kagurazaka, Shinjuku-ku, Tokyo 162-8601 Japan
  • WAKESHIMA Ikuko
    Department of Industrial Chemistry, Faculty of Engineering, Science University of Tokyo; Kagurazaka, Shinjuku-ku, Tokyo 162-8601 Japan

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Other Title
  • 塩基としてシアン酸ナトリウムを用いる反応によるトリス(β-ジケトナト)ビスマス(III)錯体の合成と性質
  • エンキ ト シテ シアンサン ナトリウム オ モチイル ハンノウ ニ ヨル トリス ベータ ジケトナト ビスマス 3 サクタイ ノ ゴウセイ ト セイシツ
  • Synthesis and Properties of Tris(.BETA.-diketonato) bismuth(III) Complexes by the Reaction Using NaOCN as Base.

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Abstract

The reactions of bismuth trichloride (BiCl3) with β-diketone (acetylacetone; Hacac, benzoylacetone; Hbzac, dibenzoylmethane; Hdbzm, dipivaloylmethane; Hdpm) in the presence of sodium cyanate and additives (tetramethylurea, THF, 15-crown-5, triethylammonium chloride) in methanol/benzene solution yielded the corresponding pure tris(β-diketonato)bismuth(III) complexes. THF was the most effective additive in the reaction of BiCl3 with Hdbzm. The solubility of the isolated bismuth(III) complexes for aprotic organic solvents (benzene, THF, dichloromethane and hexane) and methanol was examined. The characterization of the isolated bismuth(III) complexes was carried out by means of IR, 1H-NMR, 13C-NMR, MS and TG measurements.

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