A novel dinuclear zinc（II） complex [Zn2L（μ-OAc）]（PF6）2（CH3OH） has been synthesized from a new symmetrical compartmental ligand HL in which the pendant arms, bearing pyridyl groups, are bridged by 1,3-diaminop...A novel dinuclear zinc（II） complex [Zn2L（μ-OAc）]（PF6）2（CH3OH） has been synthesized from a new symmetrical compartmental ligand HL in which the pendant arms, bearing pyridyl groups, are bridged by 1,3-diaminopropan-2-ol. X-ray crystal structure shows that the two zinc atoms reside within the adjacent ligand compartments and are bridged by the endogenous alkoxo-O from ligand and one exogenous carboxylate from acetate with a syn-syn mode. The coordination geometry of two zinc atoms is a distorted trigonal bipyramid with the pyridyl-N atoms and bridging alkoxo-O atom providing the equatorial donor set. Such coordination geometry observed in this complex is similar to that found in the dinuclear unit ofphospholipase C.展开更多
A new dinucleating ligand consisting of a tetraphenylporphyrin derivative covalently linked with tris(2-benzimidazylmethyl)-amine and its homodinuclear Co-Co and heterodinuclear Co-Cu complexes were synthesized and ...A new dinucleating ligand consisting of a tetraphenylporphyrin derivative covalently linked with tris(2-benzimidazylmethyl)-amine and its homodinuclear Co-Co and heterodinuclear Co-Cu complexes were synthesized and spectroscopically characterized. The heterobimetallic cobalt-copper complex bearing three benzimidazole ligands for copper, as cytochrome c oxidase active site model, was applied to the surface of glassy carbon electrode to show electrocatalytic activity for O 2 reduction in aqueous solution at an acidity level close to physiological pH value. The kinetic parameters of this electrocatalytic process were obtained.展开更多
文摘A novel dinuclear zinc（II） complex [Zn2L（μ-OAc）]（PF6）2（CH3OH） has been synthesized from a new symmetrical compartmental ligand HL in which the pendant arms, bearing pyridyl groups, are bridged by 1,3-diaminopropan-2-ol. X-ray crystal structure shows that the two zinc atoms reside within the adjacent ligand compartments and are bridged by the endogenous alkoxo-O from ligand and one exogenous carboxylate from acetate with a syn-syn mode. The coordination geometry of two zinc atoms is a distorted trigonal bipyramid with the pyridyl-N atoms and bridging alkoxo-O atom providing the equatorial donor set. Such coordination geometry observed in this complex is similar to that found in the dinuclear unit ofphospholipase C.
文摘A new dinucleating ligand consisting of a tetraphenylporphyrin derivative covalently linked with tris(2-benzimidazylmethyl)-amine and its homodinuclear Co-Co and heterodinuclear Co-Cu complexes were synthesized and spectroscopically characterized. The heterobimetallic cobalt-copper complex bearing three benzimidazole ligands for copper, as cytochrome c oxidase active site model, was applied to the surface of glassy carbon electrode to show electrocatalytic activity for O 2 reduction in aqueous solution at an acidity level close to physiological pH value. The kinetic parameters of this electrocatalytic process were obtained.
