NMR investigation of complex formation between metalloporphyrins and ?-donors

Autor: O. A. Chamaeva, A. N. Kitaigorodskii
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