Preparation, crystal structure, and stereochemical properties of {N,N'-ethylenebis(1,1,1-trifluoro-4-imino-2-pentanonato)} (L-methioninato)cobalt(III).
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概要
- 論文の詳細を見る
The (−)<SUB>435</SUB> isomer of the {<I>N</I>,<I>N</I>′-ethylenebis(1,1,1-trifluoro-4-imino-2-pentanonato)}(L-methioninato)cobalt(III) complex, (−)<SUB>435</SUB>-[Co(tfac<SUB>2</SUB>en)(L-met)], was preferentially crystallized from an equilibrium mixture of the (−)<SUB>435</SUB> and (+)<SUB>435</SUB> isomers in methanol. The crystal structure of the (−)<SUB>435</SUB> isomer was determined by X-ray diffraction. The (−)<SUB>435</SUB> isomer is of a Λ-cis-β<SUB>2</SUB> type in which the quadridentate tfac<SUB>2</SUB>en takes a nonplanar configuration, and the L-methioninate is bound to the cobalt atom by nitrogen and oxygen atoms as a bidentate ligand. The electronic absorption, CD, and <SUP>1</SUP>H NMR spectral behaviors of both (−)<SUB>435</SUB> and (+)<SUB>435</SUB> isomers are discussed in relation to their geometrical and absolute configurations.
- 公益社団法人 日本化学会の論文
著者
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Fujii Yuki
Department Of Chemistry Faculty Of Science Ibaraki University
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Okamoto Ken-ichi
Department Of Advanced Materials Science & Engineering Faculty Of Engineering Yamaguchi Universi
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Matsutani Katsuhiro
Department of Chemistry, University of Tsukuba
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