Tuning the gas phase redox properties of copper(ii) ternary complexes of terpyridines to control the formation of nucleobase radical cations

2006 ◽  
pp. 5051 ◽  
Author(s):  
Adrian K. Y. Lam ◽  
Brendan F. Abrahams ◽  
Martin J. Grannas ◽  
W. David McFadyen ◽  
Richard A. J. O'Hair
Keyword(s):  
Gas Phase ◽  
Radical Cations ◽  
Ternary Complexes ◽  
Redox Properties

Designing copper(ii) ternary complexes to generate radical cations of peptides in the gas phase: Role of the auxiliary ligand

2004 ◽  
pp. 3199 ◽  
Author(s):  
Christopher K. Barlow ◽  
Sheena Wee ◽  
W. David McFadyen ◽  
Richard A. J. O'Hair
Keyword(s):  
Gas Phase ◽  
Radical Cations ◽  
Ternary Complexes ◽  
Auxiliary Ligand

Reactivity Trends in the Gas Phase Addition of Acetylene to N-protonated Aryl Radical Cations

2020 ◽  
Author(s):  
Oisin Shiels ◽  
P. D. Kelly ◽  
Cameron C. Bright ◽  
Berwyck L. J. Poad ◽  
Stephen Blanksby ◽  
...  
Keyword(s):  
Gas Phase ◽  
Ion Trap ◽  
Radical Cations ◽  
Rate Coefficients ◽  
Similar Process ◽  
Ion Molecule Reactions ◽  
Aromatic Radicals ◽  
Polycyclic Aromatic ◽  
Gas Phase Ion ◽  
Type Radical

<div> <div> <div> <p>A key step in gas-phase polycyclic aromatic hydrocarbon (PAH) formation involves the addition of acetylene (or other alkyne) to σ-type aromatic radicals, with successive additions yielding more complex PAHs. A similar process can happen for N- containing aromatics. In cold diffuse environments, such as the interstellar medium, rates of radical addition may be enhanced when the σ-type radical is charged. This paper investigates the gas-phase ion-molecule reactions of acetylene with nine aromatic distonic σ-type radical cations derived from pyridinium (Pyr), anilinium (Anl) and benzonitrilium (Bzn) ions. Three isomers are studied in each case (radical sites at the ortho, meta and para positions). Using a room temperature ion trap, second-order rate coefficients, product branching ratios and reaction efficiencies are reported. </p> </div> </div> </div>

Size-Dependent Hydrogen Atom Attachment to Gas-Phase Hydrogen-Deficient Polypeptide Radical Cations

2018 ◽  
Vol 140 (2) ◽  
pp. 531-533 ◽  
Author(s):  
Luciano H. Di Stefano ◽  
Dimitris Papanastasiou ◽  
Roman A. Zubarev
Keyword(s):  
Hydrogen Atom ◽  
Gas Phase ◽  
Radical Cations ◽  
Size Dependent
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