Jump to main content
Jump to site search

Issue 5, 2017
Previous Article Next Article

meso-to-meso PtII-bridged NiII-porphyrin dimers

Author affiliations

Abstract

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 mesomeso 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 mesomeso linked dimer 9 upon chemical or electrochemical one-electron oxidation, while trans-dimer 7 was stable under such conditions.

Graphical abstract: meso-to-meso PtII-bridged NiII-porphyrin dimers

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 02 Feb 2017, accepted on 22 Feb 2017 and first published on 28 Feb 2017


Article type: Research Article
DOI: 10.1039/C7QO00093F
Citation: Org. Chem. Front., 2017,4, 767-772
  •   Request permissions

    meso-to-meso PtII-bridged NiII-porphyrin dimers

    N. Fukui, H. Jiang and A. Osuka, Org. Chem. Front., 2017, 4, 767
    DOI: 10.1039/C7QO00093F

Search articles by author