Document Detail

Infrared multiple photon dissociation spectroscopy and density functional theory (DFT) studies of protonated permethylated β-cyclodextrin-water non-covalent complexes.
MedLine Citation:
PMID:  24658048     Owner:  NLM     Status:  Publisher    
We present infrared multiple photon dissociation (IRMPD) spectroscopy and quantum chemical calculation results for the protonated permethylated β-cyclodextrin (CD)-water non-covalent complex, the simplest β-CD non-covalent complex, in the gas-phase. The IRMPD spectrum in the region 2700-3750 cm(-1) consisted of three strong peaks at 3096, 3315, and 3490 cm(-1). These spectral features in the experimental IRMPD spectrum were compared with a large set of infrared absorption spectra predicted using density functional theory (DFT) calculations for the protonated β-CD-water complex. Complex III (see ), in which the water molecule (at the primary rim) and the proton (at the secondary rim) were separated, was found to suitably reflect the main spectral characteristics found in the experimental IRMPD spectrum. The absence of the homodromic hydrogen bond ring, due to replacement of hydroxyl groups with methoxy groups in permethylated β-CD, rendered the primary rim open compared with the unmodified β-CD 'one-gate-closed' lowest energy conformer. This study demonstrates that IRMPD studies combined with DFT theoretical calculations can be a good method for studying molecular interactions of large host-guest pairs.
Sung-Sik Lee; Soojin Park; Ju-Young Kim; Hye-Rim Kim; Sungyul Lee; Han Bin Oh
Related Documents :
24836778 - Effect of ph on the chemical modification of quercetin and structurally related flavono...
24083568 - Gold(i)-catalyzed asymmetric induction of planar chirality by intramolecular nucleophil...
23679218 - Self-assembled ln(iii)4 (ln = eu, gd, dy, ho, yb) [2 × 2] square grids: a new class of ...
24113688 - Hot spots in different metal nanostructures for plasmon-enhanced raman spectroscopy.
25220398 - The solvent effect on two competing reaction mechanisms involving hypervalent iodine re...
14518878 - 2:1 ba/ti(iv) heterobimetallic complex based on two calix[6]arenes.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-3-24
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  -     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-3-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Hypernatremia in Dice Snakes (Natrix tessellata) from a Coastal Population: Implications for Osmoreg...
Next Document:  Unusual Compression Behavior of Nanocrystalline CeO2.