• Title/Summary/Keyword: Thiolato

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Reactivity of [Pt(dppf)Cl2] toward Simple Organic Thiolates: Preparation and Structure of [Pt(dppf)(SPh)2], [Pt(dppf)(S-n-Pr)2], and [Pt(dppf)(SCH2CH2CH2S)] (dppf = Fe(η5-C5H4PPh2)2)

  • Han, Won-Seok;Kim, Yong-Joo;Lee, Soon W.
    • Bulletin of the Korean Chemical Society
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    • v.24 no.1
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    • pp.60-64
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    • 2003
  • The reactions of $[Pt(dppf)Cl_2]$ with thiophenol (PhSH), 1-propanethiol (n-PrSH), and 1,3-propanedithiol $(HSCH_2CH_2CH_2SH)$ gave the corresponding Pt-dppf-di(thiolato) compounds, $[Pt(dppf)(SPh)_2]\;(1),\;[Pt(dppf)(S-n-Pr)_2]\;(2),\;and [Pt(dppf)(SCH_2CH_2CH_2S)]\;(3)$, respectively. All products are monomeric and 4-coordinate square-planar compounds and were structurally characterized by X-ray diffraction. Electrochemical measurements (cyclovoltammograms) revealed that the oxidation potential of the dppf ligand appears to depend on the type of the group on the thiolato ligand.

Studies on the oxygen-Atom-Transfer Reactions of Peroxo Vanadium(Ⅴ) Complexes (Peroxo Vanadium(Ⅴ)화합물들에 의한 산소 원자 전이 반응에 관한 연구)

  • Won, Tae Jin
    • Journal of the Korean Chemical Society
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    • v.45 no.3
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    • pp.213-218
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    • 2001
  • The reaction of peroxo vanadium(V) complexes, $VO(O_2)_2(pic)^{2-}$, $VO(O_2)(nta)^{2-}$, and $VO(O_2)(dipic)^-$ with thiolato-cobalt(III), $(en)_2Co(SCH_2CH_2NH_2)^{2+}$ resulted in an oxygen-atom transfer in aqueous solutions. Rate constants ($M^{-1}S^{-1}$) for these reactions were (35$\pm$1), $(4.8{\pm}0.4){\times}10^{-2}$ , and $(8.6{\pm}0.5){\times}10^{-4}$, respectively. The coordinate peroxide was activated in the oxygen-atom-transfer reaction of $VO(O_2)_2(pic)^{2-}$, but it is not the case for VO(O$_2$) $(nta)^{2-}$ and VO(O$_2$) $(dipic)^-$. In this paper, we proposed that the direct attack of an electrophilic peroxide to a nucleophilic substrate occurs in the oxygen-atom transfer pathway of peroxo vanadium(V) complexes.

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