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One-electron oxidation of chlorophyll a and (tetraphenylporphyrinato)cobalt(II) by various metalloporphyrin cation radicals. Kinetic spectrophotometric studies

โœ Scribed by Neta, P.; Grebel, Varda; Levanon, Haim


Book ID
121434959
Publisher
American Chemical Society
Year
1981
Tongue
English
Weight
358 KB
Volume
85
Category
Article
ISSN
0022-3654

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One-electron oxidation and demetalation
โœ Haim Levanon; P. Neta ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 356 KB

Formation of cation radicals by pulse radiolysis of metalloporphyrins and chlorophyll a in 1,2dichIoroethane is reported. Demetalation of the metalloporphyrin by radiolytically produced HCl is also observed. Rate constants for demetalation of ZnTPP and Chl a are 1 .I X IO8 and = 3 X IO8 h!-' s-I\_ O