Název:
Detection of Signed Homonuclear Couplings between Low Abundant Nuclei
Autoři:
Blechta, Vratislav ; Schraml, Jan Typ dokumentu: Příspěvky z konference Konference/Akce: NMR Vatltice /26./, Valtice (CZ), 2011-05-01 / 2011-05-04
Rok:
2011
Jazyk:
eng
Abstrakt: The subject of this lecture is a modification of CSEc method for detection of signed homonuclear couplings. The new sequence is neither trivial nor simple application of the CSEc but some tricks are used to design broadband pulse sequence without selective pulses. The sequence was proved on a few samples by measuring carbon-carbon two- and three-bond couplings. For the first time signs of 2J(Si-O-Si) couplings were measured on a set of siloxane oligomers with different bond maps. The results will be presented.
Klíčová slova:
linear spin system; sign of J(C,C); signed coupling Číslo projektu: CEZ:AV0Z40720504 (CEP), IAA400720706 (CEP) Poskytovatel projektu: GA AV ČR Zdrojový dokument: Book of Abstracts, ISBN 978-80-86441-34-4