ORCID Profile
0000-0002-0275-7272
Current Organisation
Centre National de la Recherche Scientifique
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Publisher: Royal Society of Chemistry (RSC)
Date: 2006
DOI: 10.1039/B602319N
Abstract: FTIR tunneling splittings for a range of fundamental excitations of malonaldehyde are determined from adiabatic cooling and symmetry breaking experiments in three different molecular states (isolated, coated by Ar layers and embedded in bulk Ar matrices), showing that there is room for improvement in available theoretical models.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C002345K
Abstract: Proton tunneling between the two equivalent structures of malonaldehyde through a substantial barrier is accelerated by more than a factor of 3 to approximately 0.24 ps by OH-bend excitation in phase with suitable motions of the molecular backbone. This is derived from a combined FTIR and Raman spectroscopy study in supersonic jets and rare gas matrices and compared to previous theoretical predictions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8CP07053A
Abstract: The NH stretch of pyrrole experiences downshifts when expanded with N 2 or embedded in pure/mixed N 2 matrices, no blueshift.
Publisher: Informa UK Limited
Date: 24-05-2013
Publisher: IOP Publishing
Date: 12-02-2019
Publisher: Elsevier BV
Date: 10-2012
Publisher: American Chemical Society (ACS)
Date: 19-11-2005
DOI: 10.1021/JP054903W
Abstract: The UV isomerization of formamide (HCONH2) trapped in xenon, nitrogen, argon, and neon cryogenic matrices has been monitored by Fourier transform infrared (FT-IR) spectroscopy. Formamide monomer is the only species present in the matrices after deposition when UV-selective irradiation was carried out at 240 nm, the n --> pi transition allowed us to observe the formation of several isomers of formimidic acid [H(OH)C=NH]. On these latter species, we carried out selective IR irradiation of their OH stretching mode and compared the experimental and theoretical (B3LYP/6-311+G(2d,2p)) sets of bands. This study allowed us to characterize for the first time all the isomers of formimidic acid. We have then studied the vacuum UV photodecomposition (lambda > 160 nm) of this molecule at 10 K in argon and xenon matrices. Several primary photoproducts such as HCN.H2O, HNC.H2O, and HNCO.H2 complexes, yielded by dehydration and dehydrogenation processes, were characterized.
Location: No location found
No related grants have been discovered for Stephane Coussan.