Degradation of Cytosine Radical Cations in 2′-Deoxycytidine and in i-Motif DNA: Hydrogen-Bonding Guided Pathways

2019 ◽  
Vol 141 (5) ◽  
pp. 1970-1979 ◽  
Author(s):  
Yinghui Wang ◽  
Hongmei Zhao ◽  
Chunfan Yang ◽  
Jialong Jie ◽  
Xiaojuan Dai ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Radical Cations

scholarly journals Supramolecular chemistry: from aromatic foldamers to solution-phase supramolecular organic frameworks

2015 ◽  
Vol 11 ◽  
pp. 2057-2071 ◽  
Author(s):  
Zhan-Ting Li
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Chemistry ◽  
Radical Cations ◽  
Secondary Structures ◽  
Solution Phase ◽  
Aromatic Stacking ◽  
Research Activities ◽  
Donor Acceptor

This mini-review covers the growth, education, career, and research activities of the author. In particular, the developments of various folded, helical and extended secondary structures from aromatic backbones driven by different noncovalent forces (including hydrogen bonding, donor–acceptor, solvophobicity, and dimerization of conjugated radical cations) and solution-phase supramolecular organic frameworks driven by hydrophobically initiated aromatic stacking in the cavity of cucurbit[8]uril (CB[8]) are highlighted.

scholarly journals New insights into the oxidation of phenoxatellurine with sulfuric acid

2019 ◽  
Vol 42 (1) ◽  
pp. 150-152 ◽  
Author(s):  
Farzin Mostaghimi ◽  
Jens Bolsinger ◽  
Enno Lork ◽  
Jens Beckmann
Keyword(s):  
Hydrogen Bonding ◽  
Sulfuric Acid ◽  
Coordination Polymer ◽  
Crystal Lattice ◽  
Ion Pairs ◽  
Radical Cations ◽  
Sulfate Ions ◽  
X Ray ◽  
X Ray Crystallography ◽  
Double Decker

Abstract The oxidation of phenoxatellurine (PT) with conc. H2SO4 was reinvestigated. Two crystalline products, namely [PT2][H3O](SO4H)3 (1) and [PT](SO4) (2) were isolated and fully characterized by X-ray crystallography. The structure of 1 features [PT2]2+ dications giving rise to double-decker structures with two parallel PT layers that arise from dimerisation of two radical cations [PT]˙+. The [PT2]2+ dications and the hydrogensulfate ions are associated via secondary Te···O interations. The oxonium ion and the hydrogensulfate ions are involved in hydrogen bonding. The structure of 2 comprises ion pairs consisting of [PT]2+ dications and sulfate ions, which form a 2D coordination polymer. In addition, adjacent sulfate ions in the crystal lattice bind to tellurium atoms via secondary secondary Te···O interations.

scholarly journals Weak hydrogen bonding motifs of ethylamino neurotransmitter radical cations in a hydrophobic environment: infrared spectra of tryptamine+–(N2)n clusters (n ≤ 6)

2014 ◽  
Vol 16 (8) ◽  
pp. 3798 ◽  
Author(s):  
Kenji Sakota ◽  
Markus Schütz ◽  
Matthias Schmies ◽  
Raphael Moritz ◽  
Aude Bouchet ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectra ◽  
Radical Cations ◽  
Weak Hydrogen Bonding

Ping-Pong Protons: How Hydrogen-Bonding Networks Facilitate Heterolytic Bond Cleavage in Peptide Radical Cations

2014 ◽  
Vol 118 (10) ◽  
pp. 2628-2637 ◽  
Author(s):  
Konstantin O. Zhurov ◽  
Matthew D. Wodrich ◽  
Clémence Corminboeuf ◽  
Yury O. Tsybin
Keyword(s):  
Hydrogen Bonding ◽  
Bond Cleavage ◽  
Radical Cations ◽  
Ping Pong ◽  
Hydrogen Bonding Networks

Hydrogen bonding in liquid methanol at ambient conditions and at high pressure

2000 ◽  
Vol 98 (3) ◽  
pp. 125-134 ◽  
Author(s):  
T. Weitkamp, J. Neuefeind, H. E. Fisch
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Ambient Conditions
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