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Ab Initio Quantum Mechanical Studies of 1,2-, 1,3-Dioxetanes and 1,3-Cyclodisiloxane; Energetics, Molecular Structures, Vibrational Frequencies
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 Title & Authors
Ab Initio Quantum Mechanical Studies of 1,2-, 1,3-Dioxetanes and 1,3-Cyclodisiloxane; Energetics, Molecular Structures, Vibrational Frequencies
Choi Kun-Sik Choi; Seung-Joon Kim;
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 Abstract
The geometrical parameters, vibrational frequencies, and relative energies for 1,2-, 1,3-dioxetanes, and 1,3-cyclodisiloxane have been investigated using high level ab initio quantum mechanical techniques with large basis sets. The geometries have been optimized at the self-consistent field(SCF), the single and double excitation configuration interaction(CISD), the coupled cluster with single and double excitation(CCSD), and the CCSD with connected triple excitations[CCSD(T)] levels of theory. The highest level of theory employed in this study is TZ2P CCSD(T). Harmonic vibrational frequencies and IR intensities are also determined at the SCF level of theory with various basis sets and confirm that all the optimized geometries are true minima. Also zero-point vibrational energies have been considered to predict the dimerization energies for 1,2- and 1,3-isomers.
 Keywords
Dioxetane;Cyclodisiloxane;Ab Initio;Aldehyde;Silanone;
 Language
Korean
 Cited by
1.
Interplay of thermochemistry and Structural Chemistry, the journal (Volume 25, 2014, Issues 3–4) and the discipline, Structural Chemistry, 2015, 26, 3, 887  crossref(new windwow)
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