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STRONG INADEQUATE, an Experiment for Detection of Small J(C,C) Couplings in Symmetrical Molecules.
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SYSNO ASEP 0512033 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název STRONG INADEQUATE, an Experiment for Detection of Small J(C,C) Couplings in Symmetrical Molecules. Tvůrce(i) Blechta, Vratislav (UCHP-M) RID, ORCID, SAI
Sýkora, Jan (UCHP-M) RID, ORCID, SAIZdroj.dok. Magnetic Resonance in Chemistry. - : Wiley - ISSN 0749-1581
Roč. 57, č. 12 (2019), s. 1107-1120Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova carbon–carbon coupling ; equivalent carbons ; INADEQUATE Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA15-12719S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000473866400001 EID SCOPUS 85068389300 DOI 10.1002/mrc.4897 Anotace 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. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0302246
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