An XPS Study on Tetra-(p-nitrophenyl) Porphyrin Transition Metal Complexes

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (10): 1410.

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An XPS Study on Tetra-(p-nitrophenyl) Porphyrin Transition Metal Complexes

SHI Tong-Shun, WEI Quan, CAO Xi-Zhang

Department of Chemistry, Jilin University, Changchun, 130023

Received:1992-11-02 Revised:1993-03-15 Online:1993-10-24 Published:1993-10-24

Abstract

Abstract: The tetra-(p-nitrophenyl) porphyrin and its Mn(Ⅲ), Co(Ⅱ), Ni(Ⅱ) and Cu(Ⅱ) complexes and six manganese porphyrin complexes were investigated by XPS.π→π transition energy and shift of binding energies of N_1s and Mn_{2p_3/2} show that these metallic compounds are porphyrin metal complexes formed by the mosaic of metal atom into the π-electron system of the macrocycle structure of the prophyrins.The experimental results show that the binding energies of Mn_{2p_3/2} of different kinds of manganese porphyrin complexes descend as the electronegativity of substituents on porphyrin ring decreases.The XPSdata of different manganese porphyrin complexes may be used to infer the structures of the substituents of the complexes.

Key words: Porpllyrin metal complexes, XPS, Electronegativity

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SHI Tong-Shun, WEI Quan, CAO Xi-Zhang. An XPS Study on Tetra-(p-nitrophenyl) Porphyrin Transition Metal Complexes[J]. Chem. J. Chinese Universities, 1993, 14(10): 1410.

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An XPS Study on Tetra-(p-nitrophenyl) Porphyrin Transition Metal Complexes

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