• Title/Summary/Keyword: Isocyanide Ligand

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Ionic Hydrogenation of Carbonyl Groups With Molybdenum and Tungsten Complexes (몰리브덴과 텅스텐 착물을 이용한 카르보닐기의 이온성 수소화 반응)

  • Song Jeong-Sup
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.7 no.4
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    • pp.715-720
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    • 2006
  • Metalhydrides such as $Cp(CO)_{2}(L)MH$ (L = t-butylisocyanide and 2,6-dimethylphenylisocyanide M = Mo and W) have been synthesized and used for ionic hydrogenation of the carbonyl groups in the presence of triflic acid. When these complexes have also used as catalyst precursors for hydrogenation of 3-pentanone under mild conditions ($23^{\circ}C,\;<4.1\;atm H_{2}$). The turnover rates were very slow, with the fastest initial rate of about 2 turnovers per 1 day for the [$Cp(CO)_{2}(ArNC)Mo][BA_{r}^{F}_{4}$] system.

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Synthesis and Characterization of Phthalocyaninatometal (PcM, M=$Fe^{2+}$, $Co^{2+}$ Complexes with Monodenate Aromatic Isocyanide Ligands

  • 임윤묵;박하선;송수호;박찬조;유하일;이종기;양현수
    • Bulletin of the Korean Chemical Society
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    • v.20 no.6
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    • pp.701-704
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    • 1999
  • Metallophthalocyanines [PcM, Pc: phthalocyanine, M: Fe 2+ , Co 2+ ] were reacted with α-isocyanonaphthalene( α-in) and α-isocyanoanthracene (α-ia) to form monomeric complexes. The synthesis and coordination behaviour of the isocyanides as a ligand (L) are discussed. All the products were characterized by spectroscopic methods and instrumental analysis. The electrical conductivities of these complexes, which were not treated with dopant, were attributed to the metal-ligand electron delocalization in the PcML2 complexes. The complexes have an enlarged macrocycle where the π-electron back donating ability of PcM is stronger than the σ-electron coordinating ability of the isonitrile ligands. Their electrical conductivities were measured as σRT = 2.1×10 -9 ~3×10 -10 S/cm. Also thermal stability was investigated in this study.