Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis and Catalytic Properties of Ruthenium(Ⅲ) Unsymmetrical Schiff Base Complexes

  • Yeo Hwhan-Jin (Department of Chemistry, Taecher's College, Kyungpook National University) ;
  • Lim Jong-Wan (Department of Chemistry, Taecher's College, Kyungpook National University)
  • Published : 1992.06.20
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Abstract

Ruthenium(III) unsymmetrical Schiff base complexes, $[Ru(CHBPH-TP)Cl_2]$ and $K[Ru(CHBPH-HB)Cl_2]$ were synthesized, where CHBPH-TP and CHBPH-HB are 5-chloro-2-hydroxybenzophenonethiophencarba aldehydephenylenediimine and 5-chloro-2-hydroxybenzophenonehydroxybenzophe nonephenylenediimine. These Schiff bases were obtained from the reactions of 5-chloro-2-hydroxybenzophenone (CHB) and 2-thiophenecarbaldehyde (TP) or hyroxybenzophenone (HB) and 1,2-diaminobenzene. Elemental analysis, conductivity and infrared studies of the complexes suggest an octahedral geometry around ruthenium. Magnetic moments of the complexes indicate a single unpaired electron in alow spin $d^5$ configuration. The complexes are capable of catalyzing the oxidation of styrene with sodium hypochlorite in the presence of phase transfer agent. Oxidative cleavage of C=C bond is the major reaction pathway to form benzaldehyde for styrene oxidation.

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