meso-to-meso PtII-bridged NiII-porphyrin dimers
文献信息
发布日期
2017-02-28
DOI
10.1039/C7QO00093F
影响因子
5.281
作者
Norihito Fukui, Hua-Wei Jiang, Atsuhiro Osuka
查看原文
摘要
The synthesis and characterization of meso-to-meso PtII-bridged NiII-porphyrin dimers 5–7 are reported herein. A boron–platinum exchange reaction of meso-pinacolatoborylporphyrin 8 with Pt(cod)Cl2 afforded the cod-coordinated meso-to-meso PtII-linked cis-dimer 5, which was subsequently converted to the 1,3-bis(diphenylphosphino)propane (DPPP)-coordinated cis-dimer 6 and the PPh3-coordinated trans-dimer 7 upon treatment with DPPP and PPh3, respectively. On the other hand, a reaction of 5 with tri-tert-butylphosphine induced reductive elimination to give the meso–meso directly linked diporphyrin 9. Comparative studies of these PtII-bridged NiII-porphyrin dimers were conducted by UV/Vis absorption spectroscopy, electrochemical studies, and theoretical calculations. In the course of these studies, we found that cis-dimers 5 and 6 underwent an unprecedented reductive elimination to give the meso–meso linked dimer 9 upon chemical or electrochemical one-electron oxidation, while trans-dimer 7 was stable under such conditions.
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来源期刊
Organic Chemistry Frontiers
CiteScore:
7.8
自引率:
8.7%
年发文量:
724
Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry
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