Pulse Radiolysis of Liquids at High Pressures. II. Diffusion‐Controlled Reactions of the Hydrated Electron

1972 ◽  
Vol 56 (9) ◽  
pp. 4485-4488 ◽  
Author(s):  
Robert R. Hentz ◽  
Farhataziz ◽  
Earl M. Hansen
Keyword(s):  
Pulse Radiolysis ◽  
High Pressures ◽  
Hydrated Electron ◽  
Diffusion Controlled

Formation and characterization of transitory platinum–ammonia complex ions using pulse radiolysis

1981 ◽  
Vol 59 (24) ◽  
pp. 3319-3325 ◽  
Author(s):  
Hasan M. Khan ◽  
William L. Waltz ◽  
Robert J. Woods ◽  
Jochen Lilie
Keyword(s):  
Hydrogen Atom ◽  
Pulse Radiolysis ◽  
Aqueous Media ◽  
Hydrated Electron ◽  
Complex Ions ◽  
Initial Product ◽  
Detection Analysis ◽  
Diffusion Controlled ◽  
Ammonia Complex ◽  
Long Term Behavior

The reactions of tetraammineplatinum(II) complex ion with the hydrated electron and hydrogen atom have been investigated in aqueous media using the technique of pulse radiolysis coupled with absorption and conductivity detection. Analysis has also been carried on pulse-irradiated solutions for the formation of free ammonia and for changes in concentration of Pt(II). The hydrated electron and hydrogen atom react with the complex at near diffusion-controlled rates, with the respective rate constant being 1.9 ± 0.1 × 1010 M−1 s−1 and 2.8 ± 0.3 × 1010 M−1 s−1. The nascent products of these reactions are shown to be different transitory species. For the electron reaction, the initial product is Pt(NH3)4+ in which the metal center is formally Pt(I). In acidic media, there is a subsequent and rapid release of two ammonia ligands, with only the second step being measurable (k = 4.2 ± 1.7 × 104 s−1). In the reaction of H atom, the results support the occurrence of an addition process, giving rise to a hydrido type product. This species undergoes a first-order reaction (k = 2.2 ± 0.6 × 104 s−1); however the process is not associated with a change in conductivity, and thus it is not one involving loss of ammonia. Subsequent to this process, the loss of one ammonia ligand is observed, with k = 2.0 ± 0.6 × 103 s−1. The natures of these transients and the long term behavior of these systems are discussed.

A nanosecond pulse radiolysis study of the hydrated electron with high energy ions with a narrow velocity distribution

2004 ◽  
Vol 385 (1-2) ◽  
pp. 66-71 ◽  
Author(s):  
G. Baldacchino ◽  
G. Vigneron ◽  
J.-P. Renault ◽  
S. Pin ◽  
Z. Abedinzadeh ◽  
...  
Keyword(s):  
Velocity Distribution ◽  
Pulse Radiolysis ◽  
High Energy ◽  
Nanosecond Pulse ◽  
Hydrated Electron ◽  
High Energy Ions

Pulse Radiolysis of Supercritical Water. 3. Spectrum and Thermodynamics of the Hydrated Electron

2005 ◽  
Vol 109 (7) ◽  
pp. 1299-1307 ◽  
Author(s):  
David M. Bartels ◽  
Kenji Takahashi ◽  
Jason A. Cline ◽  
Timothy W. Marin ◽  
Charles D. Jonah
Keyword(s):  
Supercritical Water ◽  
Pulse Radiolysis ◽  
Hydrated Electron

Hydrated electron decay measurements with picosecond pulse radiolysis at elevated temperatures up to 350°C

2006 ◽  
Vol 424 (1-3) ◽  
pp. 77-81 ◽  
Author(s):  
G. Baldacchino ◽  
V. De Waele ◽  
H. Monard ◽  
S. Sorgues ◽  
F. Gobert ◽  
...  
Keyword(s):  
Pulse Radiolysis ◽  
Elevated Temperatures ◽  
Picosecond Pulse ◽  
Hydrated Electron

Pulse radiolysis of nitric oxide in aqueous solution

1970 ◽  
Vol 48 (2) ◽  
pp. 393-394 ◽  
Author(s):  
W. A. Seddon ◽  
M. J. Young
Keyword(s):  
Nitric Oxide ◽  
Aqueous Solution ◽  
Steady State ◽  
Aqueous Solutions ◽  
Pulse Radiolysis ◽  
Hydrated Electron ◽  
Neutral Ph

Pulse radiolysis of aqueous solutions of nitric oxide at neutral pH shows that the reaction initiated by the hydrated electron, e−(aq), proceeds via NO− and a new transient thought to be (N2O2)−, and not HNO as indicated previously by steady state radiolysis.

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