Electronic and ESR spectral studies of a series of phosphine and phosphite adducts with cobaloxime analog.

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概要

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• Electronic and ESR spectra were measured for solutions of Co(dmgBF<SUB>2</SUB>)<SUB>2</SUB> in the presence of PX<SUB>3</SUB>, where Co(dmgBF<SUB>2</SUB>)<SUB>2</SUB> is a BF<SUB>2</SUB> capped species of bis(dimethylglyoximato)cobalt(II) (Co(Hdmg)<SUB>2</SUB>) and PX<SUB>3</SUB> is PBu<SUB>3</SUB>, PPh<SUB>3</SUB>, P(OEt)<SUB>3</SUB>, or P(OPh<SUB>3</SUB>)<SUB>3</SUB>. <SUP>31</SUP>P hyperfine splittings of their ESR spectra demonstrated that Co(dmgBF<SUB>2</SUB>)<SUB>2</SUB> forms only 1 : 1 adducts with PX<SUB>3</SUB>. The visible absorption spectrum of the dichloromethane solution of Co(dmgBF<SUB>2</SUB>)<SUB>2</SUB> showed an absorption band at 444 nm at 20°C. Upon PX<SUB>3</SUB> being added to the solution, the band shifted to a longer wavelength; the band shift increased with increasing the electron-donating ability of PX<SUB>3</SUB>.

• 公益社団法人 日本化学会の論文

著者

• Mita Keisuke

  Osaka Municipal Technical Research Institute

• Hotta Kazuhiko

  Osaka Municipal Technical Research Institute

• Takui Takeji

  Faculty of Science, Osaka City University

関連論文

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