Electronic structure of planar-quasicycled organic molecules with intramolecular hydrogen bond

Autor:	Pankratov Alexei N., Shalabay Alexei V.
Jazyk:	angličtina
Rok vydání:	2007
Předmět:	intramolecular hydrogen bond electronic structure organic compounds with planar quasicycle quantum chemical ab initio study dipole moment Chemistry QD1-999
Zdroj:	Journal of the Serbian Chemical Society, Vol 72, Iss 3, Pp 265-273 (2007)
Druh dokumentu:	article
ISSN:	0352-5139 1820-7421
DOI:	10.2298/JSC0703265P
Popis:	By means of the HF/6-311G(d,p) method, the electronic structure of the series of organic molecules, among which are malonaldehyde, acetylacetone, thiomalonaldehyde,’the derivatives of aniline 2-XC6H4NH2, phenol 2-XC6H4OH, benzenethiol 2-XC6H4SH (X = CHO, COOH, COO-, NO, NO2, OH, OCH3, SH, SCH3, F, Cl, Br), 8-hydroxyquinoline, 8-mercaptoquinoline, tropolone, has been studied. The intramolecular hydrogen bond (IHB) has been established to lead to a local electron redistribution in quasicycle, and primarily to the electron density transfer between the direct IHB participants - from the hydrogen atom toward the proton-aceptor atom. On forming the IHB of the S-H···O type, the electron density in general decreases on the sulphohydryl hydrogen atom and increases on the sulphur atom.
Databáze:	Directory of Open Access Journals
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