112444-07-2Relevant academic research and scientific papers
Metal Complexes with Tetrapyrrole Ligands, XLV. The Mercuration of Nickel(II), Palladium(II), and Platinum(II) Porphyrins
Buchler, Johann W.,Herget, Gerhard
, p. 1003 - 1008 (2007/10/02)
The mercuration of 5,10,15,20-tetrakis(4-methylphenyl)porphyrin complexes M(TTP) (2a-c; M = Ni, Pd, Pt) is described.Treatment of Ni(TTP) (2a) with mercuric acetate in refluxing benzene and subsequently with aqueous sodium chloride yields a mixture of species M(TTP-HgnCln) (1A more rapid reaction occurs with mercuric trifluoroacetate in chlorobenzene.With this system, Pd(TTP-HgCl) (3b) and Pt(TTP-HgCl) (3c) along with their bis-, tris-, and tetrakis-mercurated analogs are obtained.The reaction times indicate that replacement of Ni(II) by Pd(II) and Pt(II) progressively diminishes the rate of electrophilic attack at the porphyrin periphery, consistent with a decrease of the total density of negative charge on the porphyrin ligand in these complexes. - Keywords: Noble Metal Porphyrins, Chloromercurimetalloporphyrins, Mercuration
