Interaction between porphyrins and hydroxylated compounds. Part 2. Effect of p-nitrophenol during the metallation of tetraphenylporphyrin
- 1 January 1985
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 7,p. 951-954
- https://doi.org/10.1039/p29850000951
Abstract
The behaviour of tetraphenylporphyrin during its metallation with copper(II) acetylacetonate has been investigated in the presence of p-nitrophenol in benzene and in dichloromethane. Rate constants have been measured, and the forward reaction has been shown to be catalysed by p-nitrophenol. The kinetic orders of reaction were 1, 1, and 0.5 in porphyrin, p-nitrophenol, and Cu(acac)2 respectively in both solvents. Moreover, in CH2Cl2 a dimeric form of Cu(acac)2 was observed; only the monomeric species reacts with the porphyrin. A general mechanism is proposed.Keywords
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