STRONG INADEQUATE, an Experiment for Detection of Small J(C,C) Couplings in Symmetrical Molecules.

Kód výsledku v IS VaVaI

RIV/67985858:_____/19:00512033 - isvavai.cz

Výsledek na webu

http://hdl.handle.net/11104/0302246

DOI - Digital Object Identifier

10.1002/mrc.4897

Jazyk výsledku

angličtina

Název v původním jazyce

STRONG INADEQUATE, an Experiment for Detection of Small J(C,C) Couplings in Symmetrical Molecules.

Popis výsledku v původním jazyce

A new version of the two-dimensional INADEQUATE experiment was designed for detection of small couplings between equivalent carbon atoms separated in the molecule by several bonds, where other techniques fail due to rich line splitting and mutual peak cancellation in many molecules. As the proposed method is suitable for detection of couplings in strongly coupled systems in general, we propose the name STRONG INADEQUATE in the paper. Similar to other methods for detection of couplings between equivalent carbons, the STRONG INADEQUATE experiment utilizes one-bond carbon–proton coupling for creation of the effective chemical shift differences. The STRONG INADEQUATE experiment works superbly for nJCC, where n ≥ 3. Then the F1 pattern is reduced to a simple antiphase doublet with nJCC separation, and this pattern is also preserved when a symmetrical HC···C′H′ system is coupled to other protons. Even in the measurement of 2JCC couplings, the STRONG INADEQUATE experiment generates a much simpler pattern than the original pulse sequences for measurement of couplings between equivalent carbons.

Název v anglickém jazyce

STRONG INADEQUATE, an Experiment for Detection of Small J(C,C) Couplings in Symmetrical Molecules.

Popis výsledku anglicky

A new version of the two-dimensional INADEQUATE experiment was designed for detection of small couplings between equivalent carbon atoms separated in the molecule by several bonds, where other techniques fail due to rich line splitting and mutual peak cancellation in many molecules. As the proposed method is suitable for detection of couplings in strongly coupled systems in general, we propose the name STRONG INADEQUATE in the paper. Similar to other methods for detection of couplings between equivalent carbons, the STRONG INADEQUATE experiment utilizes one-bond carbon–proton coupling for creation of the effective chemical shift differences. The STRONG INADEQUATE experiment works superbly for nJCC, where n ≥ 3. Then the F1 pattern is reduced to a simple antiphase doublet with nJCC separation, and this pattern is also preserved when a symmetrical HC···C′H′ system is coupled to other protons. Even in the measurement of 2JCC couplings, the STRONG INADEQUATE experiment generates a much simpler pattern than the original pulse sequences for measurement of couplings between equivalent carbons.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

GA15-12719S: Experimentální stanovení rozložení elektronové hustoty v polycyklických aromatických látkách; kapalná versus pevná fáze

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Magnetic Resonance in Chemistry

ISSN

0749-1581

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

1107-1120

Kód UT WoS článku

000473866400001

EID výsledku v databázi Scopus

2-s2.0-85068389300