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Electrochemistry of cobalt-porphyrin complexes in aqueous solution

✍ Scribed by D.G. Davis; L.A. Truxillo

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
692 KB
Volume
64
Category
Article
ISSN
0003-2670

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✦ Synopsis

The electrochetiistry of cobalt hematoporphyrin with nitrogen-containing axial ligands has not been reported previously although some complexes with pyridine and cyanide have been investigated by spectrophotometry'.

Unlike most complexes of cobalt(II1) which are not very labile, the hematoporphyrin complex has been shown by stopped-flow methods2 to be quite labile toward substitution. This lability is caused by some loss of transition metal character when cobalt interacts with the ' * NDEA Fellow.

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## Abstract The interactions of the tetracationic __meso__‐tetrakis(__N__‐methyl‐4‐pyridyl)porphyrin (H~2~TMPyP) and its metallo derivatives (MTMPyP) (where M=copper(II), zinc(II), and gold(III) with the octa‐anionic form (at neutral pH) of 5,11,17,23‐tetrasulfonato‐25,26,27,28‐tetrakis(hydroxycarb