Acid–Base Formalism Extended to Excited State for O–H···S Hydrogen Bonding Interaction

2016 ◽  
Vol 120 (35) ◽  
pp. 6902-6916 ◽  
Author(s):  
Surjendu Bhattacharyya ◽  
Ved Prakash Roy ◽  
Sanjay Wategaonkar
Keyword(s):  
Hydrogen Bonding ◽  
Excited State ◽  
Hydrogen Bonding Interaction ◽  
Acid Base ◽  
Bonding Interaction

Solid-State Photocycloaddition Reactions between Di-2-Pyrones Tethered by Arylalkyl Chain and Benzophenones

2011 ◽  
Vol 396-398 ◽  
pp. 2467-2470
Author(s):  
Wei Dong Wang ◽  
Tetsuro Shimo
Keyword(s):  
Hydrogen Bonding ◽  
Excited State ◽  
Reaction Mechanism ◽  
Solid State ◽  
Carbonyl Oxygen ◽  
Hydrogen Bonding Interaction ◽  
Triplet Excited State ◽  
Bonding Interaction ◽  
High Site ◽  
Solid State Interaction

Solid-state photocycloaddition reactions between di-2-pyrones (1a-d) with benzophenone (2a) gave the corresponding oxetane derivatives (3a-d; 1:2 adducts) with high site- and regioselectivity across the C5-C6 and C5′-C6′ double bonds in 1 via the triplet excited state of 2a. The reactions were inferred by MO methods to be initiated by electrostatic interaction between the C6 position of 1a-d and the carbonyl oxygen of 2a at their ground states, and the solid-state interaction may be enhanced by electron density at carbonyl oxygen of the triplet 2a. The transition state (TS) analysis of the [2+2] cycloaddition reactions also suggested some triplet complex, and the high regioselectivity. The hydrogen-bonding interaction between 2a and 1a-d and the triplet reaction mechanism were also explained by the IR analyses and the quenching experiments, respectively.

Highly efficient CO2 capture by carbonyl-containing ionic liquids through Lewis acid–base and cooperative C–H⋯O hydrogen bonding interaction strengthened by the anion

2014 ◽  
Vol 50 (95) ◽  
pp. 15041-15044 ◽  
Author(s):  
Fang Ding ◽  
Xi He ◽  
Xiaoyan Luo ◽  
Wenjun Lin ◽  
Kaihong Chen ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Lewis Acid ◽  
Co2 Capture ◽  
Significant Enhancement ◽  
Hydrogen Bonding Interaction ◽  
Acid Base ◽  
Highly Efficient ◽  
Bonding Interaction

Carbonyl-containing anion-functionalized ionic liquids exhibit a significant enhancement in CO2 capacity and excellent reversibility.

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