Reactions, ion-molecule

Smith M A 1994 Ion-molecule reaction dynamics at very low temperatures Unimolecular and Bimolecular Ion-Molecule Reaction Dynamics ed C-Y Ng, T Baer and I Powis (New York Wiley) 

Franklin J L (ed) 1979 Ion-Molecule Reactions, Part I, Kinetics and Dynamics (Stroudsburg, PA Dowden, Hutchinson and Ross) 

M. Baer, in State-Selected and State-to-State Ion-Molecule Reaction Dynamics, M. Baer and C, Y. Ng., eds., John Wiley. Sons, Inc., New York, 1992, Vol. II, Chap. 4. 

Ferguson E E 1979 ion-moiecuie reactions in the atmosphere K/nef/cs of Ion-Molecule Reactions ed P Ausioos (New York Pienum) 

Ikezoe Y, Matsuoka S, Takebe M and Viggiano A A 1987 Gas Phase Ion-Molecule Reaction Rate Constants Through 1986 (Tokyo Maruzen) 

A comprehensive look at the effect of state selection on ion-molecule reactions from both experimental and theoretical viewpoints. 

The same procedure as outlined above can be used to study ion-molecule reactions [15, 34]- Mass-selected ions will react with neutral species inside the trap. The presence of the damping gas means that stable (tliemiodynamic and 

Futrell J FI 1992 Crossed-moleoular beam studies of state-to-state reaotion dynamios State-Selected and State-to-State Ion-Molecule Reaction Dynamics Part 1. Experiment ed C Ng and M Baer (New York Wiley) 

Flierl P M ef a/1996 Flowing afterglow apparatus for the study of ion-molecule reactions at high temperatures Rev. Scl. Instrum. 67 2142-8 

Farrar J M and Saunders W H Jr (eds) 1988 Techniques for the Study of Ion-Molecule Reactions (New York Wiley) 

McFarland M, Albritton D L, Fehsenfeld F C, Ferguson E E and Schmeltekopf A L 1973 Flow-drift technique for ion mobility and ion-molecule reaction rate constant measurements. I. Apparatus and mobility measurements J. Chem. Phys. 59 6610-19 

Although this reaction is exothemiic, the reaction has a small rate constant. This is one of the most studied ion-molecule reactions, and dependences on many parameters have been measured [148]. 

The decrease in reactivity with increasing temperature is due to the fact that many low-energy ion-molecule reactions proceed tln-ough a double-well potential with the following mechanism [82]  

However, in both FI and FD, there are other neutral molecules on or close to the surface of the emitter and, in this region, ion/molecule reactions between an initial ion and a neutral (M(H)) can produce protonated molecular ions ([M + H]+), as seen in Equation 5.2. 

Ferguson E E 1992 A personal history of the early development of the flowing afterglow technique for ion molecule reactions studies J. Am. Soc. Mass Spectrom. 3 479-86 

At the limit of extremely low particle densities, for example under the conditions prevalent in interstellar space, ion-molecule reactions become important (see chapter A3.51. At very high pressures gas-phase kinetics approach the limit of condensed phase kinetics where elementary reactions are less clearly defined due to the large number of particles involved (see chapter A3.6). 

Mass spectrometric investigations of the ionosphere show an abundance of molecular ions such as NO and watercluster ions [4T ]. This is an indication of the result of ion-molecule reactions which change the chemical state of the ions in this plasma  

Grover R, Decouzon M, Maria P-C and Gal J-F 1996 Reliability of Fourier transform-ion cyclotron resonance determinations of rate constants for ion/molecule reactions Eur. Mass Spectrom. 2 213-23 

Collision-induced dissociation mass spectrum of tire proton-bound dimer of isopropanol [(CH2)2CHOH]2H. The mJz 121 ions were first isolated in the trap, followed by resonant excitation of their trajectories to produce CID. Fragment ions include water loss mJz 103), loss of isopropanol mJz 61) and loss of 42 anui mJz 79). (b) Ion-molecule reactions in an ion trap. In this example the mJz 103 ion was first isolated and then resonantly excited in the trap. Endothennic reaction with water inside the trap produces the proton-bound cluster at mJz 121, while CID produces the fragment with mJz 61. 

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