Theoretical Investigation of the Cooperativity in CH3CHO·2H2O, CH2FCHO·2H2O, and CH3CFO·2H2O Systems
Joint Authors
Chandra, Asit K.
Zeegers-Huyskens, Thérèse
Source
Journal of Atomic, Molecular, and Optical Physics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-29
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The hydrogen bond interaction between CH3CHO, CH2FCHO, and CH3CFO and two water molecules is investigated at the B3LYP/6-311++G(d,p) level.
The results are compared with the complexes involving the same carbonyl derivatives and one water molecule.
The calculations involve the optimization of the structure, the harmonic vibrational frequencies, and relevant NBO (natural bond orbital) parameters such as the NBO charges, the occupation of antibonding orbitals, and intra- and intermolecular hyperconjugation energies.
Two stable cyclic structures are predicted.
The two structures are stabilized by C=O⋯HO hydrogen bond.
The A structures are further stabilized by CH⋯O bond involving the CH3 (CH2F) group.
This bond results in an elongation of the CH bond and red shift of the ν(CH) vibration.
The B structures are stabilized by CH⋯O interaction involving the aldehydic CH bond.
The formation of this bond results in a marked contraction of the CH bond and blue shift of the ν(CH) vibration indicating the predominance of the lone pair effect in determining the CH distances.
The total interaction energies range from −12.40 to −13.50 kcal mol−1.
The cooperative energies calculated at the trimer geometry are comprised between −2.30 and −2.60 kcal mol−1.
American Psychological Association (APA)
Chandra, Asit K.& Zeegers-Huyskens, Thérèse. 2012. Theoretical Investigation of the Cooperativity in CH3CHO·2H2O, CH2FCHO·2H2O, and CH3CFO·2H2O Systems. Journal of Atomic, Molecular, and Optical Physics،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-496194
Modern Language Association (MLA)
Chandra, Asit K.& Zeegers-Huyskens, Thérèse. Theoretical Investigation of the Cooperativity in CH3CHO·2H2O, CH2FCHO·2H2O, and CH3CFO·2H2O Systems. Journal of Atomic, Molecular, and Optical Physics No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-496194
American Medical Association (AMA)
Chandra, Asit K.& Zeegers-Huyskens, Thérèse. Theoretical Investigation of the Cooperativity in CH3CHO·2H2O, CH2FCHO·2H2O, and CH3CFO·2H2O Systems. Journal of Atomic, Molecular, and Optical Physics. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-496194
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-496194