The hydrogenation of benzil catalyzed by cobalt(II) dimethylglyoxime complex.

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概要

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• Kinetic studies on the catalytic hydrogenation of benzil to benzoin by bis(dimethylglyoximato)cobalt(II), Co(Hdmg)<SUB>2</SUB>, were carried out by varying the concentration of Co(Hdmg)<SUB>2</SUB> and pyridine. The initial rate of the hydrogenation reaction was first order with respect to the overall cobalt concentration at a constant overall pyridine concentration. On the other hand, the rate passed through a peak as the overall pyridine concentration was increased at a constant overall cobalt concentration. The peak was observed at [py]<I><SUB>T</SUB></I>=130 mmol dm<SUP>−3</SUP>, where the square bracket denotes the concentration in the liquid phase. These results show that the initial reaction rate, <I>V</I><SUB>in</SUB>, can be expressed by the following rate equation,<BR><I>V</I><SUB>in</SUB>=<I>k</I>[Co(Hdmg)<SUB>2</SUB>]\frac58[py]<I><SUB>T</SUB></I>1+58[py]<I><SUB>T</SUB></I>,<BR>where, <I>k</I>=1.1 min<SUP>−1</SUP>.

• 公益社団法人 日本化学会の論文

著者

• Mita Keisuke

  Osaka Municipal Technical Research Institute

関連論文

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• The adsorption of nucleic acid bases by raney-nickel, -cobalt, and -copper.
• The hydrogenation of benzil catalyzed by cobalt(II) dimethylglyoxime complex.
• Substitution reaction of in-plane ligand in bis(dimethylglyoximato)-cobalt(II) complex with N,N'-Disalicylideneethylenediamine.

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