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报道了2个取代三联吡啶配体(4′-苯基-2,2′∶6′,2″-三联吡啶(L1)和4′-二茂铁基-2,2′∶6′,2″-三联吡啶(L2))的Co(Ⅱ)配合物([Co(Ⅱ)(L1)2](ClO4)2·4CH3CN(1)和[Co(Ⅱ)(L2)2](ClO4)2H2O(2))的合成及配体L2和配合物1和配合物2的晶体结构.电化学研究表明:在配合物2中,由于Co2+的作用,二茂铁基的氧化电位较配体L2中的二茂铁基的氧化电位有0.14V的正移动.同时发现,在配合物1中,Co2+的氧化还原电位较2中Co2+的氧化还原电位有0.06V的正移动.说明在配合物2的二茂铁中的Fe(Ⅱ)与Co(Ⅱ)之间存在着由分子片断传递的电子相互作用.
Two substituted terpyridine ligands (4’-phenyl-2,2 ’: 6’, 2 "-terpyridine (L1) and 4’-ferrocene-2,2’6 ’ Co (II) (L1) 2] (ClO4) 2.4CH3CN (1) and [Co (II) (L2) 2] (ClO4) 2H2O (2)) and the crystal structures of ligand L2 and complexes 1 and 2. Electrochemical studies showed that in complex 2, due to the action of Co2 +, the oxidation potential of ferrocenyl groups was 0.14V more positive than the oxidation potential of ferrocenyl groups in ligand L2. It is also found that in complex 1, the redox potential of Co2 + has a positive shift of 0.06V from the redox potential of Co2 + in two phases. It shows that there exists an electronic interaction between Fe (Ⅱ) and Co (Ⅱ) in the ferrocene of the complex 2 through the molecular fragment.