Relative Signs of 29Si-13C Couplings
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F08%3A00309022" target="_blank" >RIV/67985858:_____/08:00309022 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Relative Signs of 29Si-13C Couplings
Original language description
Two pulse sequences applicable to the determination of relative signs of coupling constants, gHSQC RELAY(P) and gHSQC RELAY(D), were developed and tested. These sequences are suitable for determination of relative signs of long-range coupling constants between two heteronuclei of low abundance (such as 29Si and 13C) and are applicable even to cases in which one of the heteronuclei (29Si) does not exhibit coupling with some of the detected protons (1H). The two sequences differ in the manner in which they suppress undesirable homonuclear coherence transfers. Each of the sequences can be combined with an isotope filter for better suppression of the centerlines arising from more abundant, NMR-inactive isotopes. The sequences were tested on ethoxytrimethylsilane and (E)-(buta-1,3-dienyloxy)trimethylsilane, and we conclude that 2J(29Si O 13C) is positive while 3J(29Si O C 13C) is negative in both compounds.
Czech name
Relativni znaménka 29Si-13C couplingu
Czech description
Byly vyvinuty a testovány pulsní sekvence gHSQC-RELAY (P) and gHSQC-RELAY (D). Tyto sekvence jsou vhodné k detekci relativních znamének long-range coupling konstant (<2Hz) mezi dvěma heterojádry o nízkém přirozeném zastoupení (jako je 29Si a 13C), a to iv případě, že některé detekované protony nejsou couplovaáy k 29Si. Sekvence se liší ve způsobu, jak potlažují nežádoucí homojaderné polarizační přenosy. Sekvence byly testovány na ethoxytrimetkylsilanu a na (E)-(buta-1,3-dienyloxy)trimethylsilanu s výsledkem, že 2J(29Si-O-13C) je pozitivní a 3J(29Si-O-C-13C) je negativní v obou případech.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Magnetic Resonance in Chemistry
ISSN
0749-1581
e-ISSN
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Volume of the periodical
46
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
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UT code for WoS article
257727200006
EID of the result in the Scopus database
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