Circular dichroism spectra of the dicobalt(III) complexes containing two bridging .MU.-hydroxo ligands.
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概要
- 論文の詳細を見る
Five cobalt(III) complexes, [(gly)<SUB>2</SUB>Co(μ-OH)<SUB>2</SUB>Co(en)<SUB>2</SUB>]<SUP>2+</SUP> (two geometrical isomers), [(edda)Co(μ-OH)<SUB>2</SUB>Co(en)<SUB>2</SUB>]<SUP>2+</SUP> (two geometrical isomers), and [(nta)Co(μ-OH)<SUB>2</SUB>Co(en)<SUB>2</SUB>]Cl, were newly prepared and optically resolved. Their structures were assigned on the basis of visible and UV absorption, <SUP>1</SUP>H NMR, and circular dichroism (CD) spectral data. It was found that the CD contributions of the two different cobalt(III) chromophores are additive in the present complex systems. The vicinal CD which is induced on one of the two cobalt chromophores by the other chiral cobalt chromophore was strong (|Δε|: ca. 2). These complexes are stable for several days in aqueous solution.
- 公益社団法人 日本化学会の論文
著者
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Yasui Takaji
Department Of Chemistry Faculty Of Science Kochi University
-
Ama Tomoharu
Department Of Chemistry Faculty Of Science Kochi University
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Kawaguchi Hiroshi
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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