A simple relation between 1H NMR data and mixing enthalpy for systems with complex formation by hydrogen bonding

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F02%3A00006952" target="_blank" >RIV/60461373:22340/02:00006952 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/02:00006953

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A simple relation between 1H NMR data and mixing enthalpy for systems with complex formation by hydrogen bonding

Popis výsledku v původním jazyce

enthalpy has been found for systems that form 1:1 complexes by hydrogen bonding. Starting from relatively general assumptions, we havederived two forms of this relation. The first form is represented by proportionality between the solution enthalpy of the proton-donor and the chemical shift change of its active hydrogen atom. The second form is mediated by the relative extent of hydrogen bond formation , a quantity which can be directly evaluated from measurements of either the 1H NMR chemical shift orthe mixing enthalpy. The validity of both relation forms has been convincingly demonstrated for 12 systems formed by a strong proton donor (halothane [1-brom-1-chlor-2,2,2-trifluorethane] or trichloromethane) and an oxygen- or nitrogen-containing proton -acceptor (aliphatic

Název v anglickém jazyce

A simple relation between 1H NMR data and mixing enthalpy for systems with complex formation by hydrogen bonding

Popis výsledku anglicky

enthalpy has been found for systems that form 1:1 complexes by hydrogen bonding. Starting from relatively general assumptions, we havederived two forms of this relation. The first form is represented by proportionality between the solution enthalpy of the proton-donor and the chemical shift change of its active hydrogen atom. The second form is mediated by the relative extent of hydrogen bond formation , a quantity which can be directly evaluated from measurements of either the 1H NMR chemical shift orthe mixing enthalpy. The validity of both relation forms has been convincingly demonstrated for 12 systems formed by a strong proton donor (halothane [1-brom-1-chlor-2,2,2-trifluorethane] or trichloromethane) and an oxygen- or nitrogen-containing proton -acceptor (aliphatic

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Jornal of Physical Chemistry B

ISSN

1520-6106

e-ISSN

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Svazek periodika

106

Číslo periodika v rámci svazku

47

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

12307-12310

Kód UT WoS článku

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EID výsledku v databázi Scopus

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