CHEMISTRY OF NICKEL AND VANADYL PORPHYRINS.
Conference
Quirke, JME, Martinez, ZC. (1986). CHEMISTRY OF NICKEL AND VANADYL PORPHYRINS.
. American Chemical Society, Division of Petroleum Chemistry, Preprints, 31(2), 623.
Quirke, JME, Martinez, ZC. (1986). CHEMISTRY OF NICKEL AND VANADYL PORPHYRINS.
. American Chemical Society, Division of Petroleum Chemistry, Preprints, 31(2), 623.
The distributions of the nickel and vanadyl geoporphyrins from the same sample are usually markedly different. Such differences may be attributed to one of two factors: preferential chelation of one of the two metals by different geoporphyrins species; the different chemistry of the nickel and vanadyl porphyrin complexes gave rise to the variation in the distributions. The results of a series of competitive metallation studies are presented, and their role in the preferential chelation of the geoporphyrins discussed. The reactivity of the nickel and vanadyl porphyrins at both the beta - and meso (bridge) positions are described, and their significance in the analysis of geoporphyrin mixtures outlined.
