Synthesis and Photophysics of One Mononuclear Mn(III) and One Dinuclear Mn(III,III) Complex Covalently Linked to a Ruthenium(II) Tris(bipyridyl) Complex

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• 作者：Anh Johansson ; Malin Abrahamsson ; Ann Magnuson ; Ping Huang ; Jerker Må ; rtensson ; Stenbj&ouml ; rn Styring ; Leif Hammarstr&ouml ; m ; Licheng Sun ; and Bj&ouml ; rn Å ; kermark
• 刊名：Inorganic Chemistry
• 出版年：2003
• 出版时间：November 17, 2003
• 年：2003
• 卷：42
• 期：23
• 页码：7502 - 7511
• 全文大小：195K
• 年卷期：v.42,no.23(November 17, 2003)
• ISSN：1520-510X

文摘

The preparation of donor (D)-photosensitizer (S) arrays, consisting of a manganese complex as D and a rutheniumtris(bipyridyl) complex as S has been pursued. Two new ruthenium complexes containing coordinating sites forone (2a) and two manganese ions (3a) were prepared in order to provide models for the donor side of photosystemII in green plants. The manganese coordinating site consists of bridging and terminal phenolate as well as terminalpyridyl ligands. The corresponding ruthenium-manganese complexes, a manganese monomer 2b and dimer 3b,were obtained. For the dimer 3b, our data suggest that intramolecular electron transfer from manganese tophotogenerated ruthenium(III) is fast, k_ET > 5 × 10⁷ s^-1.