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<p>Theoretical study of hydrogen bonded picolinic acid-water complexes</p>

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Title Statement <p>Theoretical study of hydrogen bonded picolinic acid-water complexes</p>
 
Added Entry - Uncontrolled Name Guin, Mridula ; Pooja Bhagavat Memorial Mahajana PG Centre, University of Mysore, KRS Road, Mysore 570 016, India
Nayak, Ananth N; Pooja Bhagavat Memorial Mahajana Post Graduate Centre, Affiliated To the University of Mysore, Karnataka.
Made Gowda, Netkal M; Pooja Bhagavat Memorial Mahajana Post Graduate Centre, Affiliated To the University of Mysore, Karnataka. Department of Chemistry, Western Illinois University, 1 University Circle, Macomb, Illinois 61455, USA
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Uncontrolled Index Term Theoretical & quantum chemistry
Theoretical chemistry, Density functional calculations, Ab initio calculations, Hydrogen bonding, Atom-in-molecule analysis, Natural bond orbitals
 
Summary, etc. <p style="text-align: justify;">Quantum chemical calculations have been performed on the hydrogen bonded picolinic acid-water complexes by Hartree-Fock, second-order Moller-Plesset perturbation theory, density functional theory, and density functional theory with dispersion correction using 6-311++G(d,p) basis set. For the isolated picolinic acid moiety, four stable stationary points, corresponding to four different conformers are found at all levels of calculation. The structure with intramolecular COO-H×××N hydrogen bond is found to be the most stable conformer at all levels of theory. Taking the lowest energy conformer as the starting geometry, three different conformers are predicted for the binary complexes of picolinic acid with water. Geometrical parameters, interaction energy, vibrational analysis in detail have been investigated. The intramolecular hydrogen bond is retained in two complexes while structural deformation occurs<strong> </strong>in one complex due to cleavage of the intramolecular hydrogen bond. The natural bond orbital analysis and atoms in molecules theory have been applied to understand the nature of interaction present in picolinic acid-water complexes.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2021-07-02 10:20:01
 
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http://op.niscair.res.in/index.php/IJCA/article/view/12781
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 55, ##issue.no## 7 (2016): INDIAN JOURNAL OF CHEMISTRY - SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/12781/36885
http://op.niscair.res.in/index.php/IJCA/article/download/12781/36932
 
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