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97 results on '"Desseyn, H. O."'

52. The Characteristic Pattern of Thioamides in Infrared and Raman Spectra

Author

Desseyn, H. O., van der Veken, B. J., and Herman, M. A.

Abstract

A number of simple products, containing the thioamide functional groups, have been investigated in infrared and Raman spectra; from the average appearance and potential energy distribution values, a pattern characteristic for the thioamide groups has been given.

Published
1978
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55. Dithiooxamides as ligands: crystal structures and vibrational analyses of bis(N,N'-dicyclohexyldithiooxamidato)palladium(II) bis(N,N'-dibenzyldithiooxamide)copper(II) diperchlorate, and dichloro(N,N'-dimethyldithiooxamide)zinc(II) and the carbon-13 nuclear magnetic resonance spectra of related compounds

Author

Antolini, Luciano, FABRETTI COSTANTINO, Antonio, Franchini, Giancarlo, Menabue, Ledi, Pellacani, Gian Carlo, Desseyn, H. O., Dommisse, R., and Hofmans, H. C.

Subjects
metal complexes nuclear magnetic resonance, dithiooxamide metal complexes crystal structures, dithiooxamide metal complexes vibrational spectroscopy
Published
1987

67. ChemInform Abstract: Dithio-oxamides as Ligands: Crystal Structures and Vibrational Analyses of Bis(N,N′-dicyclohexyldithio-oxamidato)palladium(II), Bis(N,N′-dibenzyldithio-oxamide)copper(II) Diperchlorate, and Dichloro(N,N′-dimethyldithio-oxamide)zinc(II

Author

ANTOLINI, L., primary, FABRETTI, A. C., additional, FRANCHINI, G., additional, MENABUE, L., additional, PELLACANI, G. C., additional, DESSEYN, H. O., additional, DOMMISSE, R., additional, and HOFMANS, H. C., additional

Published
1987
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94. Vibrational study of the secondary thioamide function, the intramolecular resonance assisted and intermolecular hydrogen bonding in NN'-hydroxyalkyl dithiooxamides.

Author

Desseyn HO, Blaton N, Slootmaekers B, and Perlepes SP

Subjects
Bromides chemistry, Hydrogen Bonding, Models, Chemical, Potassium Compounds chemistry, Software, Spectrophotometry, Infrared methods, Temperature, Vibration, Thioamides chemistry
Abstract

The article describes the vibrational characterization of the secondary thioamide formation and especially a spectroscopical interesting study of different types of hydrogen bonding in NN'-dihydroxyalkyldithiooxamides.

Published
2003
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95. Vibrational characterization of the tertiary amide and thioamide group.

Author

Desseyn HO, Herrebout WA, and Clou K

Subjects
Amides analysis, Carbon chemistry, Nitrogen chemistry, Temperature, Thioamides analysis, Amides chemistry, Spectrum Analysis, Raman methods, Thioamides chemistry
Abstract

Force field calculations and vibrational spectra of (CH(3))(2)NCOCON(CH(3))(2) (TMO), (CH(3))(2)NCOCSN(CH(3))(2) (TMMTO) and (CH(3))(2)NCSCSN(CH(3))(2) (TMDTO) are discussed. The amide and thioamide fundamentals and those of other simple tertiary amides are compared. A characteristic pattern in infrared and Raman is proposed.

Published
2003
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96. Vibrational characterization of the peptide bond.

Author

Herrebout W, Clou K, Desseyn HO, and Blaton N

Subjects
Acetamides analysis, Algorithms, Amides analysis, Hot Temperature, Hydrogen Bonding, Isotopes, Models, Chemical, Oxamic Acid analogs & derivatives, Oxamic Acid chemistry, Temperature, Thermodynamics, Amides chemistry, Oxamic Acid analysis, Spectrophotometry, Infrared methods, Spectrum Analysis, Raman methods
Abstract

This article describes the complete vibrational analysis of N,N'-dimethyloxamide, CH3HNCOCONHCH3, on basis of the infrared and Raman spectra of four isotopes (H, D, CH3, CD3). Force field calculations on the monomers and multimers (n = 5) combined with solid state spectra in the -196 to +100 degrees C temperature range have been used to obtain a better understanding of the influence of hydrogen bonding on the typical amide fundamentals. The cooperative effect in de series monomer --> multimers --> solid state at decreasing temperatures has been demonstrated. Nine typical so-called 'amide bands' have been further characterized and special attention has been given to the Amide IV mode. The influence of the CH and CD vibrations on the amide fundamentals, has been studied by comparison with the calculated and experimental fundamentals and P.E.D. values of the CH3 and CD3 isotopes. The most important amide bands have further been assigned in X-CONHCH3 molecules where X = methyl, amide, thioamide, ester, salt, cyanide and acid functional groups.

Published
2003
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97. Monothioacids as novel chelating groups. The Au(III) complexes of N-methylthioamide monothiooxamic acid.

Author

Desseyn HO, Slootmaekers B, and Lemière G

Subjects
Bromine chemistry, Chlorine chemistry, Hydrogen Bonding, Molecular Structure, Spectrophotometry, Infrared, Vibration, Acids chemistry, Chelating Agents chemistry, Gold chemistry
Abstract

CH3HNCSCSOH(LH) forms AuLCl2, AuLBr2, AuL2Cl and AuL2Br complexes in acid media. The complexes are characterised by their elemental analysis and the vibrational spectra. A thorough analysis of the vibrational spectra is carried out to reveal the structure of these complexes. From this study we could conclude that all complexes exhibit a square-planar geometry around the metal ion and that in all cases the ligand acts as a bidentate, coordinating through the sulphur atoms of the thioamide and monothioacid functional groups, forming chelate ring systems.

Published
2002
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