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Your search keyword '"Marchon, Jean-Claude"' showing total 3 results
Start Over Author "Marchon, Jean-Claude" Topic nuclear magnetic resonance spectroscopy -- usage
3 results on '"Marchon, Jean-Claude"'

1. Formation of charge-transfer complexes from neutral bis(porphyrin) sandwiches

Author

Collman, James P., Kendall, Jonathan L., Chen, Judy L., Collins, K.A., and Marchon, Jean-Claude

Subjects
Chemistry, Inorganic -- Research, Porphyrins -- Research, Nuclear magnetic resonance spectroscopy -- Usage, Zirconium -- Research, Oxidation-reduction reaction -- Analysis, Chemistry
Abstract

Research has been conducted on the lanthanide(III) bis(porphyrin) sandwich complexes. The use of UV-vis, IR and NMR spectroscopies in synthesizing and characterizing these sandwiches is discussed.

Published
2000

2. Low-spin iron(III) chiroporphyrins: 1H NMR studies of cyanide and substitute imidazole coordination

Author

Wolowiec, Stanislaw, Latos-Grazynski, Lechoslaw, Mazzanti, Marinella, and Marchon, Jean-Claude

Subjects
Porphyrins -- Research, Nuclear magnetic resonance spectroscopy -- Usage, Coordination compounds -- Research, Iron compounds -- Research, Chemistry
Abstract

Research was conducted on low-spin complexes of iron(III) chiroporphyrin, obtained from (1R)-cis-caronaldehyde acid methyl ester and pyrrole as the atropisomer, with R-imidazoles and cyanide using 1D and 2D 1H nuclear magnetic resonance spectroscopy. Results reveal that low-spin iron(III) chiroporphyrin complexes exhibit significantly different properties in relation to analogous low-spin iron(III) tetrarylporphyrins.

Published
1997

3. Three-point versus two-point attachment of (R)- and (S)-amino acid methyl esters to a cobalt(III) chiroporphyrin: implications for the analysis of amino acid enantiomers by (super 1)H NMR spectroscopy

Author

Claeys-Bruno, Magalie, Toronto, Dawn, Pecaut, Jacques, Bardet, Michel, and Marchon, Jean-Claude

Subjects
Enantiomers -- Structure, Methyl ether -- Chemical properties, Nuclear magnetic resonance spectroscopy -- Usage, Chemistry
Abstract

The hydrogen-bonding capabilities of CoCl(TMCP) allow the conformation of coordinated amino esters to be uniquely defined within the chiral cavity on the time scale of NMR analysis and the porphyrin ring current amplifies the chemical shift differences between the diastereomeric adducts. These structural features make CoCl(TMCP) a very powerful derivatizing agent for the chiral analysis of amino acid derivatives.

Published
2001

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