| Cu(Ⅰ) and Cu (Ⅱ) helical complexes formed with oligobipyridine ligand |
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| 引用本文： | 舒谋海
,付有君
,孙为银
,唐雯霞
,张文剑
,段春迎.Cu(Ⅰ) and Cu (Ⅱ) helical complexes formed with oligobipyridine ligand[J].中国科学B辑(英文版),1999(5). |
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| 作者姓名： | 舒谋海 付有君 孙为银 唐雯霞 张文剑 段春迎 |
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| 作者单位： | SHU Mouhai SUN Weiyin，DUAN Chunying
FU Youjun TANG Wenxia
(State Key Laboratory of Coordination Chemistry，Coordination Chemistry Institute，Nanjing University，Nanjing 210093，China)
and ZHANG Wenjian
(State Key Laboratory of Structural Chemistry，Chinese Academy of Sciences，Fuzhou 350002，China) |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 29601003). |
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| 摘 要： | A new asymmetric oligobipyridine ligand, 1-(5'-methyl-2, 2'-bipyridin-5-yl)-2-(6'-methyl-2, 2'-bipyridin-6-yl)ethane (L), in which the bipyridine units are bridged by CH_2CH_2 at 5, 6'-position has been synthesized. The ligand L reacts with Cu(Ⅰ) and Cu(Ⅱ) ions giving double-stranded helical complexes Cu_2~ⅠL_2] (ClO_4)_2·Et_2O (1) and Cu_2~ⅡL_2 (OH) (H_2O)]ClO_4]_3(2), respectively. Complexes 1 and 2 were characterized by X-ray diffraction analyses, ES-MS, ESR and cyclic voltammetry, etc. Differing from the oligobipyridine ligands bridged by CH_2CH_2 at 6,6'-or 5,5'-position, the ligand L not only forms a double-stranded helicate with Cu(Ⅰ) ion, but also gives a double-stranded helicate with Cu(Ⅱ) ion. The results show that the linkage mode of the spacer group to the bipyridine units exerts a great impact on the formation of helix.
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