Enantioselective Oxidative (4+3) Cycloadditions between Allenamides and Furans through Bifunctional Hydrogen-Bonding/Ion-Pairing Interactions

2017 ◽  
Vol 129 (35) ◽  
pp. 10671-10674 ◽  
Author(s):  
Laura Villar ◽  
Uxue Uria ◽  
Jose I. Martínez ◽  
Liher Prieto ◽  
Efraim Reyes ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Ion Pairing ◽  
Pairing Interactions

Enantioselective Oxidative (4+3) Cycloadditions between Allenamides and Furans through Bifunctional Hydrogen-Bonding/Ion-Pairing Interactions

2017 ◽  
Vol 56 (35) ◽  
pp. 10535-10538 ◽  
Author(s):  
Laura Villar ◽  
Uxue Uria ◽  
Jose I. Martínez ◽  
Liher Prieto ◽  
Efraim Reyes ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Ion Pairing ◽  
Pairing Interactions

Corrigendum: Counterion Specificity of Polyelectrolyte Brushes: Role of Specific Ion-Pairing Interactions

ChemPhysChem ◽  
2018 ◽  
Vol 19 (15) ◽  
pp. 1930-1930
Author(s):  
Ran Kou ◽  
Jian Zhang ◽  
Zhen Chen ◽  
Guangming Liu
Keyword(s):  
Ion Pairing ◽  
Polyelectrolyte Brushes ◽  
Pairing Interactions

Fluoride-Selective Host Based on Anion–π Interactions, Ion Pairing, and Hydrogen Bonding: Synthesis and Fluoride-Ion Sandwich Complex

2007 ◽  
Vol 119 (46) ◽  
pp. 8938-8940 ◽  
Author(s):  
Mark Mascal ◽  
Ilya Yakovlev ◽  
Edward B. Nikitin ◽  
James C. Fettinger
Keyword(s):  
Hydrogen Bonding ◽  
Ion Pairing ◽  
Fluoride Ion ◽  
Sandwich Complex ◽  
Π Interactions

Separation of ten phosphorylated mono-and disaccharides using HILIC and ion-pairing interactions

2017 ◽  
Vol 972 ◽  
pp. 102-110 ◽  
Author(s):  
Caroline Mathon ◽  
Gregory A. Barding ◽  
Cynthia K. Larive
Keyword(s):  
Ion Pairing ◽  
Pairing Interactions

Efficient visible and near-infrared photoluminescent attapulgite-based lanthanide one-dimensional nanomaterials assembled by ion-pairing interactions

2014 ◽  
Vol 43 (21) ◽  
pp. 7903-7910 ◽  
Author(s):  
Jun Xu ◽  
Ye Zhang ◽  
Hao Chen ◽  
Weisheng Liu ◽  
Yu Tang
Keyword(s):  
Near Infrared ◽  
Ion Pairing ◽  
Hybrid Nanomaterials ◽  
One Dimensional ◽  
Pairing Interactions

Efficient photoluminescent attapulgite-based one-dimensional lanthanide hybrid nanomaterials are first fabricated by ion-pairing interactions.

Ion-Pairing Interactions between Co(en)33+and the23Na NMR Frequency Shift Reagent TmDOTP5- †

1997 ◽  
Vol 36 (16) ◽  
pp. 3493-3498 ◽  
Author(s):  
Jimin Ren ◽  
Charles S. Springer, ◽  
A. Dean Sherry
Keyword(s):  
Frequency Shift ◽  
Ion Pairing ◽  
Shift Reagent ◽  
Pairing Interactions

scholarly journals Pairing interactions between nucleobases and ligands in aptamer:ligand complexes of riboswitches: Crystal structure analysis, classification, optimal structures and accurate interaction energies

2019 ◽  
Author(s):  
Preethi S. Prabhakar ◽  
Purshotam Sharma ◽  
Abhijit Mitra
Keyword(s):  
Hydrogen Bonding ◽  
Visual Inspection ◽  
Weak Interactions ◽  
Binding Pocket ◽  
Crystal Structure Analysis ◽  
Thiamine Pyrophosphate ◽  
Interaction Energies ◽  
Binding Pockets ◽  
Pairing Interactions

ABSTRACTIn the present work, sixty-seven crystal structures of the aptamer domains of RNA riboswitches, are chosen for analysis of the structure and strength of hydrogen bonding (pairing) interactions between nucleobases constituting the aptamer binding pockets and the bound ligands. A total of eighty unique base:ligand hydrogen-bonded pairs containing at least two hydrogen bonds were identified through visual inspection. Classification of these contacts in terms of the interacting edge of the aptamer nucleobase revealed that interactions involving the Watson-Crick edge are the most common, followed by the sugar edge of purines and the Hoogsteen edge of uracil. Alternatively, classification in terms of the chemical constitution of the ligand yields five unique classes of base:ligand pairs: base:base, base:amino acid, base:sugar, base:phosphate and base:other. Further, quantum mechanical (QM) geometry optimizations revealed that sixty seven out of eighty pairs exhibit stable geometries and optimal deviations from their macromolecular crystal occurrences. This indicates that these contacts are well-defined RNA aptamer:ligand interaction motifs. QM calculated interaction energies of base:ligand pairs reveal rich hydrogen bonding landscape, ranging from weak interactions (base:other, –3 kcal/mol) to strong (base:phosphate, –48 kcal/mol) contacts. The analysis was further extended to study the biological importance of base:ligand interactions in the binding pocket of the tetrahydrofolate riboswitch and thiamine pyrophosphate riboswitch. Overall, our study helps in understanding the structural and energetic features of base:ligand pairs in riboswitches, which could aid in developing meaningful hypotheses in context of RNA:ligand recognition. This can, in turn contribute towards current efforts to develop antimicrobials that target RNAs.

Highly soluble complexes of [FeH6]4- and ion pairing interactions

1998 ◽  
Vol 554 (2) ◽  
pp. 171-173 ◽  
Author(s):  
Donald E. Linn Jr ◽  
Sidney G. Gibbins
Keyword(s):  
Ion Pairing ◽  
Pairing Interactions ◽  
Soluble Complexes

Anion-Exchange-Triggered 1,3-Shift of an NH Proton to Iridium in Protic N-Heterocyclic Carbenes: Hydrogen-Bonding and Ion-Pairing Effects

2009 ◽  
Vol 49 (5) ◽  
pp. 912-917 ◽  
Author(s):  
Guoyong Song ◽  
Yan Su ◽  
Roy A. Periana ◽  
Robert H. Crabtree ◽  
Keli Han ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Anion Exchange ◽  
Ion Pairing ◽  
Heterocyclic Carbenes
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