NMR investigation of complex formation between metalloporphyrins and ?-donors
Autor: | O. A. Chamaeva, A. N. Kitaigorodskii |
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Rok vydání: | 1990 |
Předmět: | |
Zdroj: | Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:1591-1595 |
ISSN: | 1573-9171 0568-5230 |
DOI: | 10.1007/bf00961484 |
Popis: | The formation of molecular complexes between Co(II), Fe(III), and Mn(III) porphyrins and π-donors in chloroform solution has been investigated using1H NMR. It was shown that their stability is controlled to a large extent by the dimensions of the π-donor; interaction of the porphyrins with phenanthroline and anthracene, which contain a condensed aromatic system, is substantially more effective than interaction with benzene-derivative π-donors. In the case of Co(II) and Fe(III) porphyrins the affinity to it-acceptors is much more pronounced than the affinity to π-donors, whereas the acetate of Mn(III) hematoporphyrin forms molecular complexes with phenanthroline, anthracene, and trinitrobenzene with similar stability constants. |
Databáze: | OpenAIRE |
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