Cis to trans photoisomerization of [CoCl2{(CH3)2PCH2CH2CH2P(CH3)2}2]+, [CoCl(H2O){(CH3)2PCH2CH2P(CH3)2}2]2+ and related complexes.

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概要

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• Ligand field irradiation of <I>cis</I>-[CoCl<SUB>2</SUB>{(CH<SUB>3</SUB>)<SUB>2</SUB>PCH<SUB>2</SUB>CH<SUB>2</SUB>CH<SUB>2</SUB>P(CH<SUB>3</SUB>)<SUB>2</SUB>}<SUB>2</SUB>]<SUP>+</SUP> in methanol and <I>cis</I>-[CoCl(H<SUB>2</SUB>O){(CH<SUB>3</SUB>)<SUB>2</SUB>PCH<SUB>2</SUB>CH<SUB>2</SUB>P(CH<SUB>3</SUB>)<SUB>2</SUB>}<SUB>2</SUB>]<SUP>2+</SUP> in acetonitrile at 5 °C led to isomerization to the trans isomer with quantum yields of 0.010 and 0.070, respectively. The same cis to trans photoisomerization of [CoCl<SUB>2</SUB>(R<SUB>2</SUB>PCH<SUB>2</SUB>CH<SUB>2</SUB>PR<SUB>2</SUB>)<SUB>2</SUB>]<SUP>+</SUP> (R=CH<SUB>3</SUB>, C<SUB>4</SUB>H<SUB>9</SUB>) occurred with much smaller quantum yields (ca. 1×10<SUP>−4</SUP>) and <I>cis</I>-[CoCl<SUB>2</SUB>{(C<SUB>6</SUB>H<SUB>5</SUB>)<SUB>2</SUB>PCHCHP(C<SUB>6</SUB>H<SUB>5</SUB>)<SUB>2</SUB>}<SUB>2</SUB>]<SUP>+</SUP> was reduced to cobalt(II) species on irradiation.

• 公益社団法人 日本化学会の論文

著者

• Kashiwabara Kazuo

  Department Of Chemistry Faculty Of Science Nagoya University

• Fujita Junnosuke

  Department of Chemistry Faculty of Science Osaka University

• Ohishi Tomoji

  Department of Chemistry, Faculty of Science, Nagoya University

• Kita Masakazu

  Department of Chemistry, Faculty of Science, Nagoya University

• Oguni Kazuma

  Department of Chemistry, Faculty of Science, Nagoya University

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