Detection of NMR Spectra Edited by Signs of Coupling Constants

0367588 - ÚCHP 2012 SK eng C - Conference Paper (international conference)
Blechta, Vratislav - Schraml, Jan
Detection of NMR Spectra Edited by Signs of Coupling Constants.
Program and Book of Abstracts. Tatranská Lomnica: Slovak National NMR Centre, 2011 - (Liptaj, T.; Imrich, J.; Koval'aková, M.; Olčák, D.), s. 16. ISBN 978-80-89284-77-1.
[Magnetic Moments in Central Europe. Tatranská Lomnica (SK), 16.03.2011-20.03.2011]
R&D Projects: GA AV ČR IAA400720706
Institutional research plan: CEZ:AV0Z40720504
Keywords : signet coupling * linear spin system * signetd J(Si,C)
Subject RIV: CC - Organic Chemistry
http://arl-repository.lib.cas.cz/nusl/UCHP-M/cav_un_epca-0367588_01.pdf

Modification (CSE) of the already published SQSQc (2D) pulse sequence is presented, which enables detection of signed nJ(29Si,13C), n=2,3, as the original SQSQc does. This new 2D sequence has coupling sign information stored in the peak heights of the spectra: either only crosspeaks with positive silicon-carbon coupling are shown and crosspeaks with negative couplings are zeroed or vice versa. The CSE experiment has fourfold higher sensitivity than SQSQc and the CSE sensitivity is comparable with the sensitivity of the E.COSY type experiment.
Permanent Link: http://hdl.handle.net/11104/0202207