Réactions des ions moléculaires cyclohexane en phase gazeuse

1975 ◽  
Vol 53 (5) ◽  
pp. 680-687 ◽  
Author(s):  
Guy J. Collin ◽  
Pierre Ausloos
Keyword(s):  
Charge Transfer ◽  
Double Bond ◽  
Chemical Analysis ◽  
Ring Opening ◽  
Transfer Reaction ◽  
Phase Gazeuse ◽  
Transfer Reactions ◽  
Atom Transfer ◽  
Charge Transfer Reaction ◽  
Unsaturated Hydrocarbons

The [Formula: see text] ions formed in the photoionization of cyclohexane (resonance lines of argon: 11.6–11.8 eV) react with cyclic (C3 and C4) and unsaturated hydrocarbons by H2 transfer. This reaction is quantitative with propene, 1-butene, 1-pentene, 1,3-butadiene, and isobutene. This transfer is efficient only if there is a terminal double bond. There is ring opening with the C3 and C4 hydrocarbons. H atom transfer reactions are also observed between [Formula: see text] ions and several compounds and the structure of the radical formed in such a reaction is determined by chemical analysis. With cis-2-butene, there is only charge transfer reaction.

Observation of translational-to-vibrational energy transfer in charge-transfer reactions of CO+ with CO using crossed-beam techniques

1991 ◽  
Vol 69 (5) ◽  
pp. 581-583
Author(s):  
Stephen L. Howard ◽  
Jaiming Wang ◽  
Alan L. Rockwood
Keyword(s):  
Charge Transfer ◽  
Transfer Reaction ◽  
Vibrational Energy ◽  
Transfer Reactions ◽  
Translational Energy ◽  
Charge Transfer Reaction ◽  
Vibrational States ◽  
Collisional Energy ◽  
Beam Method ◽  
Charge Transfer Reactions

The crossed-beam method was used to investigate the charge-transfer reaction of CO+ (X2Σ+, ν = 0) with CO (X1Σ+, ν = 0). Scattering of CO+ demonstrates that several vibrational states are populated. At a collisional energy of 1.1 eV, transfer of translational energy to vibrational energy is shown to occur by changes of an even number of vibrational quanta.

scholarly journals Influence of Viscous Media on Charge Transfer Reactions

1986 ◽  
Vol 5 (6) ◽  
pp. 351-366 ◽  
Author(s):  
T. H. Tran-Thi ◽  
A. M. Koulkes-Pujo ◽  
J. C. Mialocq ◽  
G. Folcher
Keyword(s):  
Charge Transfer ◽  
Transfer Reaction ◽  
Polymer Concentration ◽  
Transfer Reactions ◽  
Solvation Dynamics ◽  
Charge Transfer Reaction ◽  
Quenching Rate ◽  
Viscosity Effect ◽  
First Case ◽  
Charge Transfer Reactions

The influence of viscous H2O-Dextran media on two charge transfer reactions has been investigated using laser photolysis coupled with pico and nanosecond time resolved absorption spectroscopy.In the first case, a charge-transfer reaction from a solute (potassium ferrocyanide) to the solvent was studied and the electron solvation dynamics was followed. A solvation time delay, depending on the polymer concentration, is observed which indicates that electrons remain quasi-free for longer periods in these media.In the second case, the quenching process of the triplet state of an excited metallo porphyrin(ZnP4+) by an electron acceptor, methylviologen chloride (MV2+, 2 Cl–) is studied. The measured triplet quenching rate constant values decrease with increasing dextran concentration, but remain higher than those calculated, taking into account a simple viscosity effect. This result is explained in terms of a competition between a decay of the diffusion rate constants of (ZnP4+)* and MV2+ due to a viscosity effect and an enhanced cage effect around the ions (ZnP4+*, MV2+). Once formed, this last effect favours the charge transfer reaction.

Nonclassical oxygen atom transfer reactions of an eight-coordinate dioxomolybdenum(vi) complex

2021 ◽  
Author(s):  
Leila G. Ranis ◽  
Jacqueline Gianino ◽  
Justin M. Hoffman ◽  
Seth N. Brown
Keyword(s):  
Oxygen Atom ◽  
Transfer Reaction ◽  
Transfer Reactions ◽  
Atom Transfer ◽  
Oxygen Atom Transfer ◽  
Oxygen Atom Transfer Reactions ◽  
Atom Transfer Reactions ◽  
Oxygen Atoms

Eight-coordinate MoO2(DOPOQ)2 can donate two oxygen atoms to substrates such as phosphines in a four-electron nonclassical oxygen atom transfer reaction.

Nascent rovibrational distribution of NO+(A 1Π) produced from charge-transfer reaction of He2+ with NO at thermal energy

1999 ◽  
Vol 110 (18) ◽  
pp. 9064-9070 ◽  
Author(s):  
Masaharu Tsuji ◽  
Yukio Nishimura ◽  
Hiroaki Ishimi ◽  
Masahiro Hisano ◽  
Hidefumi Oota
Keyword(s):  
Charge Transfer ◽  
Thermal Energy ◽  
Transfer Reaction ◽  
Charge Transfer Reaction
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