About: The Cyclization of AlkylSide Chains of Naphthalenes: The GC/Potentila Energies/FTIR Approach

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Gas chromatographic measurements of the retention times of alkyl naphthalenes on packed columns with polar and non-polar stationary phases have proven that the logarithm of the relative retention time increases bi-linearly (not linearly) with the number of carbon atoms in a molecule. This is caused by a strong inclination of alkyl side chains toward intramolecular cyclization. A FTIR spectral analysis has shown that longer alkyl side chains of alkyl naphthalenes are cyclized through an interaction between the terminal CH3 group and the aromatic ring. Conventional aromatic-aliphatic molecules thus become new molecules with quasi-alicyclic rings. This, however, alters the effect of non-covalent van der Waals attractive forces both inside and outside the molecules, which is reflected in an exponential increase of the retention times of alkyl naphthalenes with a side chain longer than propyl and in the bi-linearity of the logarithmic dependence of the relative retention times on the number of carbons in the molecule. Gas chromatographic measurements of the retention times of alkyl naphthalenes on packed columns with polar and non-polar stationary phases have proven that the logarithm of the relative retention time increases bi-linearly (not linearly) with the number of carbon atoms in a molecule. This is caused by a strong inclination of alkyl side chains toward intramolecular cyclization. A FTIR spectral analysis has shown that longer alkyl side chains of alkyl naphthalenes are cyclized through an interaction between the terminal CH3 group and the aromatic ring. Conventional aromatic-aliphatic molecules thus become new molecules with quasi-alicyclic rings. This, however, alters the effect of non-covalent van der Waals attractive forces both inside and outside the molecules, which is reflected in an exponential increase of the retention times of alkyl naphthalenes with a side chain longer than propyl and in the bi-linearity of the logarithmic dependence of the relative retention times on the number of carbons in the molecule. (en)
Title	The Cyclization of AlkylSide Chains of Naphthalenes: The GC/Potentila Energies/FTIR Approach The Cyclization of AlkylSide Chains of Naphthalenes: The GC/Potentila Energies/FTIR Approach (en)
skos:prefLabel	The Cyclization of AlkylSide Chains of Naphthalenes: The GC/Potentila Energies/FTIR Approach The Cyclization of AlkylSide Chains of Naphthalenes: The GC/Potentila Energies/FTIR Approach (en)
skos:notation	RIV/60461373:22810/14:43897236!RIV15-MSM-22810___
http://linked.open...avai/riv/aktivita	N
http://linked.open...avai/riv/aktivity	N
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Novotná, Miroslava
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Rektorát
http://linked.open...dnocenehoVysledku	9514
http://linked.open...ai/riv/idVysledku	RIV/60461373:22810/14:43897236
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Alkyl Naphtalenes, Retention Times, Molecular Mechanics, van der Waals Forces (en)
http://linked.open.../riv/klicoveSlovo	Alkyl Naphtalenes Molecular Mechanics Retention Times van der Waals Forces
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[B2A011C2FBA8]
http://linked.open...i/riv/nazevZdroje	American Journal of Analytical chemistry
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	2014
http://linked.open...iv/tvurceVysledku	Bičáková, Olga Buryan, Petr Novotná, Miroslava Straka, Pavel
issn	2156-8251
number of pages	12 (xsd:int)
http://localhost/t...ganizacniJednotka	22810

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