Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Michèle Decouzon"'
Autor:
Michèle Decouzon, Pierre-Charles Maria, Christine Dubin Poliart, Malgorzata Darowska, Iwona Dabkowska, Ewa D. Raczyńska, Jean-François Gal
Publikováno v:
The Journal of Organic Chemistry. 69:4023-4030
The gas-phase basicity (GB) of the flexible polyfunctional N(1),N(1)-dimethyl-N(2)-beta-(2-pyridylethyl)formamidine (1) containing two potential basic sites (the ring N-aza and the chain N-imino) is obtained from proton-transfer equilibrium constant
Publikováno v:
Chemistry - A European Journal. 9:4330-4338
The gas-phase lithium cation basicities (LCBs; Gibbs free energy of binding) of ethyl-, n-butyl-, and «-heptylbenzene have been measured by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. The structures of the corresponding com
Publikováno v:
International Journal of Mass Spectrometry. 219:445-456
The gas-phase lithium-cation basicities of a series of monosubstituted benzene derivatives, namely C 6 H 5 X (X=H, Me, CHCH 2 , OH, OMe, SH, Cl, Br) have been measured by means of Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometr
Publikováno v:
International Journal of Mass Spectrometry. 217:75-79
The lithium-cation basicity (LCB=Gibbs energy of adduct dissociation) of methyl benzoate, and the three isomeric dimethyl phthalates (phthalate, iso- and tere-phthalate) has been determined by Fourier transform ion cyclotron resonance (FT-ICR), using
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :168-172
A series of seven alkyl-substituted benzonitriles was investigated as a model for small steric effects (van der Waals tension) excluding any steric inhibition due to resonance. The energies were calculated at a B3LYP/6-311+G(d,p) level and the gas-ph
Autor:
F. Vielfaure‐Joly, Michèle Decouzon, Jean-François Gal, G. Gelbard, Ewa D. Raczyńska, Pierre-Charles Maria
Publikováno v:
Journal of Physical Organic Chemistry. 14:25-34
Gas-phase basicities (GB) of strong organic bases containing the imino group were re-examined in the light of the re-evaluated GB values for the reference bases given in a recent compilation of Hunter and Lias. Structural (internal) effects which inf
Publikováno v:
Journal of Mass Spectrometry. 35:1222-1225
Autor:
Jiří Kulhánek, Otto Exner, Michèle Decouzon, Pavel Fiedler, Pilar Jiménez, Jean-François Gal, Pierre-Charles Maria, Maria-Victoria Roux
Publikováno v:
European Journal of Organic Chemistry. 1999:1589-1594
Substituent effects of the tert-butyl group in isomeric tert-butylbenzoic acids have been investigated on the basis of enthalpies of formation, gas-phase acidities, acidities in methanol and in dimethyl sulfoxide, and the IR spectra in tetrachloromet
Autor:
and Pierre-Charles Maria, Otilia Mó, Jean-Claude Guillemin, Jean-François Gal, Michèle Decouzon, Manuel Yáñez
Publikováno v:
Journal of the American Chemical Society. 121:4653-4663
The acidity and basicity trends in the series of α,β-unsaturated amines, phosphines, and arsines were analyzed through the use of G2 ab initio calculations and the examination of experimental data obtained by means of FT-ICR techniques. The α,β-u
Publikováno v:
International Journal of Mass Spectrometry. :121-138
Fourier transform ion cyclotron resonance (FTICR) mass spectrometry has been used to examine the reactions of Sc(OCD3)2+ with water, ethanol, and 1-propanol. Sigma-bond metathesis resulting in the elimination of CD3OH is the initial reaction observed