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| rdf:type
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| Description
| - Diky rychle chemicke vymene mezi tautomery za laboratorni teploty vidime casto v NMR spektru pouze signaly odpovidajici zprumerovanemu prispevku vsech tautomeru. Pri nizke teplote dochazi ke zpomaleni chemicke vymeny a umoznuje rozlisit signaly jednotlivych tautomeru. NMR signaly byly prirazeny na zaklade 2D korelacnich spekter. Pro urceni pozice protonu na purinovem skeletonu jsme vyuzili charakteristickych chemickych posunu a interakcnich konstant. NMR parametry byly take vypocteny pomoci kvantove chemickyh vypoctu a korelovany s experimentalnimi daty. Kombinace techto dvou metod umoznuje lepsi porozumeni zavislosti tautomerniho zastoupeni na substituci purinu. (cs)
- Due to the fast chemical exchange between the tautomers at laboratory temperature, in the NMR spectra we can often see only one set of signals, representing the weighted average of contributions of each tautomers. Measuring the NMR spectra at low-temperature enables us to separate the signals of tautomers due to the slowing down the chemical exchange process. The NMR signals were assigned to individual tautomers on the basis of heteronuclear 2D correlation spectra. The characteristic chemical shifts and coupling constants were used for determining the proton position on purine skeleton. The NMR parameters were also calculated by quantum chemical calculations and correlated with the experimental data. Combination of these two methods helps us to understand better the dependence of tautomeric populations and electronic distribution on the substitution patterns.
- Due to the fast chemical exchange between the tautomers at laboratory temperature, in the NMR spectra we can often see only one set of signals, representing the weighted average of contributions of each tautomers. Measuring the NMR spectra at low-temperature enables us to separate the signals of tautomers due to the slowing down the chemical exchange process. The NMR signals were assigned to individual tautomers on the basis of heteronuclear 2D correlation spectra. The characteristic chemical shifts and coupling constants were used for determining the proton position on purine skeleton. The NMR parameters were also calculated by quantum chemical calculations and correlated with the experimental data. Combination of these two methods helps us to understand better the dependence of tautomeric populations and electronic distribution on the substitution patterns. (en)
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| Title
| - Tautomeric Equilibria of Purine Derivatives Studied by Low-Temperature NMR Spectroscopy
- Tautomeric Equilibria of Purine Derivatives Studied by Low-Temperature NMR Spectroscopy (en)
- Tautomerni rovnovahy purinovych derivatu studovane pomoci nizkoteplotni NMR spektroskopie (cs)
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| skos:prefLabel
| - Tautomeric Equilibria of Purine Derivatives Studied by Low-Temperature NMR Spectroscopy
- Tautomeric Equilibria of Purine Derivatives Studied by Low-Temperature NMR Spectroscopy (en)
- Tautomerni rovnovahy purinovych derivatu studovane pomoci nizkoteplotni NMR spektroskopie (cs)
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| skos:notation
| - RIV/00216224:14310/04:00010134!RIV08-MSM-14310___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00216224:14310/04:00010134
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - NMR spectroscopy; purine; tautomerism; coupling constants (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - VII Synthetic Chemistry Meeting and XXVI Finnish NMR Symposium
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Hocek, Michal
- Marek, Radek
- Sklenář, Vladimír
- Toušek, Jaromír
- Sečkářová, Pavlína
- Kolehmainen, Erkki
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
| - Department of Chemistry, University of Jyväskylä
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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