Effects of applied pressure on the emission lifetimes and spectroscopic features of some chromium(III) ammonia and amine complex ions in aqueous media

1985 ◽  
Vol 24 (10) ◽  
pp. 1531-1538 ◽  
Author(s):  
Sang H. Lee ◽  
William L. Waltz ◽  
David R. Demmer ◽  
R. Tom Walters
Keyword(s):  
Aqueous Media ◽  
Applied Pressure ◽  
Complex Ions ◽  
Amine Complex

scholarly journals Intracluster proton transfer in aniline–amine complex ions

2002 ◽  
Vol 359 (3-4) ◽  
pp. 283-288 ◽  
Author(s):  
Yoshiya Inokuchi ◽  
Kazuhiko Ohashi ◽  
Yoshiki Honkawa ◽  
Hiroshi Sekiya ◽  
Nobuyuki Nishi
Keyword(s):  
Proton Transfer ◽  
Complex Ions ◽  
Amine Complex

Study of the Reactions of Platinum Macrocyclic Complex Ions with Free Radicals Formed by Pulse Radiolysis of Aqueous Media

1996 ◽  
Vol 35 (1) ◽  
pp. 124-130 ◽  
Author(s):  
W. L. Waltz ◽  
J. Lilie ◽  
S. Chandrasekhar ◽  
D. Woo ◽  
K. Brown
Keyword(s):  
Free Radicals ◽  
Pulse Radiolysis ◽  
Aqueous Media ◽  
Macrocyclic Complex ◽  
Complex Ions

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.

Highly efficient and selective photocatalytic CO2 to CO conversion in aqueous solution

2020 ◽  
Vol 56 (27) ◽  
pp. 3851-3854 ◽  
Author(s):  
Xiaomin Chai ◽  
Hai-Hua Huang ◽  
Huiping Liu ◽  
Zhuofeng Ke ◽  
Wen-Wen Yong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Performance ◽  
Aqueous Media ◽  
Highly Efficient ◽  
Co Conversion

A Co-based complex displayed the highest photocatalytic performance for CO2 to CO conversion in aqueous media.

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