59Co quadrupole effects on the 1H,31P, and 59Co NMR spectra of HFeCo3(CO)9(P(OCH3)3)3 and the 1H NMR spectra of other derivatives.
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概要
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The <SUP>1</SUP>H NMR spectra of HMCo<SUB>3</SUB>(CO)<SUB>12</SUB> (M=Fe or Ru) and HFeCo<SUB>3</SUB>(CO)<SUB>12−<I>x</I></SUB>[P(OR)<SUB>3</SUB>]<I><SUB>x</SUB></I> (<I>x</I>=1–3, R=CH<SUB>3</SUB>; <I>x</I>=3, R=C<SUB>2</SUB>H<SUB>5</SUB> or C<SUB>6</SUB>H<SUB>5</SUB>) showed very broad signals centered near δ=−21 at 27 °C. The band widths were generally smaller for the compounds of larger molecular volume, at lower temperatures and with higher viscosity of the solvent. These data were interpreted in terms of the quadrupole effects of <SUP>59</SUP>Co nuclei to which the hydride proton was μ<SUB>3</SUB>-bonded. Supporting evidence was obtained from the <SUP>31</SUP>P and <SUP>59</SUP>Co NMR spectra and the relaxation time <I>T</I><SUB>1</SUB> of HFeCo<SUB>3</SUB>(CO)<SUB>9</SUB>[P(OCH<SUB>3</SUB>)<SUB>3</SUB>]<SUB>3</SUB>.
- 公益社団法人 日本化学会の論文
著者
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SAITO Taro
Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo
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Sawada Satoshi
Department of Chemistry, Faculty of Engineering Science, Osaka University
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