Optically Active S-Bridged CoIIIPdII Polynuclear Complexes Derived from <i>ΔΔ</i>-[Ni{Co(aet)2(<i>R</i>-pn)}2]4+(aet = 2-Aminoethanethiolate, <i>R</i>-pn = (<i>R</i>)-1,2-Propanediamine)
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- Yasunori Yamada
- Department of Chemistry, University of Tsukuba Tsukuba, Ibaraki 305-8571
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- Yoko Maeda
- Department of Chemistry, University of Tsukuba Tsukuba, Ibaraki 305-8571
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- Takumi Konno
- Department of Chemistry, Faculty of Engineering, Gunma University Kiryu, Gunma 376-8516
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- Kiyoshi Fujisawa
- Department of Chemistry, University of Tsukuba Tsukuba, Ibaraki 305-8571
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- Ken-ichi Okamoto
- Department of Chemistry, University of Tsukuba Tsukuba, Ibaraki 305-8571
Description
<jats:title>Abstract</jats:title> <jats:p>The substitution reaction of ΔΔ-[Ni{Co(aet)2(R-pn)}2]4+ with equimolar Na2[PdCl4] in water gave selectively an optically active trinuclear complex, ΔΔ-[Pd{Co(aet)2(R-pn)}2]4+ (1). On the other hand, an optically active dinuclear complex, Δ-[PdCl2{Co(aet)2(R-pn)}]+ (2), was also obtained by a two-molar equivalent addition of Na2[PdCl4] under the same reaction condition. Similarly, the reaction of ΔΔ-[Ni{Co(aet)2(R-pn)}2]4+ with two molar equivalent [Pd(NO3)2(bpy)] produced an optically active dinuclear complex, Δ-[Pd(bpy){Co(aet)2(R-pn)}]3+ (3). The crystal structures of complexes 1, 2, and 3 were determined by X-ray crystallography. Each of the Co atoms in 1, 2, and 3 is coordinated by two aet and one R-pn ligands to take an approximately octahedral geometry. The Pd atom in 1 is coordinated by four S atoms from two cis(S)-[Co(aet)2(R-pn)]+ units. The Pd atom in 2 is ligated by two S atoms from one cis(S)-[Co(aet)2(R-pn)]+ unit and two Cl atoms, while the Pd atom in 3 is coordinated by two S atoms from one cis(S)-[Co(aet)2(R-pn)]+ unit and two N atoms in bpy. All of the Pd atoms in 1, 2, and 3 take an almost square-planar geometry. These complexes are also characterized on the basis of the electronic absorption, CD, and 13C NMR spectra. The interconversions of the trinuclear and dinuclear complexes obtained in this work are discussed.</jats:p>
Journal
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 73 (8), 1831-1837, 2000-08-01
Oxford University Press (OUP)
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Keywords
Details 詳細情報について
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- CRID
- 1360565169058088064
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- NII Article ID
- 130004150726
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- ISSN
- 13480634
- 00092673
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- Data Source
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- Crossref
- CiNii Articles