129102-32-5Relevant academic research and scientific papers
Kinetic Studies on Metalloporphyrin Formation in Aqueous Solutions of meso-Tetra(p-sulphonatophenyl)-porphyrin and some Metal(II) Ions
Bandyopadhyay,Banerjea
, p. 153 - 157 (2007/10/03)
Studies on kinetics of metalloporphyrin formation in weakly acidic aqueous solution (pH 3.8-4.7) in perchlorate medium have been carried out spectrophotometrically at 435 nm for the reactions of M(H2O)62+ (M = Mn, Fe, Co, Ni, Cu) with meso-tetra(p-sulphonatophenyl)prophyrin, TPPS4-. The results have been compared with the corresponding reactions of meso-tetra(4-N-methylpyridyl)porphyrin and the water exchange rates of the aqua-metal(II) ions. Compared to water exchange rates, reduction in the rate of formation of metalloporphyrin with TPPS4- is by a factor of 107 to 1010, the minimum and maximum values being observed with NiII and MnII respectively. The results have been interpreted on the basis of the general mechanism for metalloporphyrin formation.
