Porphyrin dimers linked by conjugated butadiyne bridges: preparations, spectra, voltammetry and reductive spectroelectrochemistry of {[M(OEP)](m-C4)[M(OEP)]} (M2 � H4, Co2, Ni2, Cu2, Zn2, Pd2, Pt2, Co/Ni, Ni/Cu, Ni/Zn)

Abstract

A series of derivatives M2P2 (M2 ≡ H4, Co2, Ni2, Cu2, Zn2, Pd2, Pt2, Co/Ni, Ni/Cu, Ni/Zn) of the ligand meso,meso′-bis(octaethylporphyrinyl)butadiyne has been prepared and characterized by 1H NMR, FT Raman and visible absorption spectroscopies as well