Number of the records: 1
SQSQh: 1H-detected SQ-SQ Experiment for Determination of Signed Silicon-Carbon Coupling Constants
- 1.
SYSNO ASEP 0352963 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title SQSQh: 1H-detected SQ-SQ Experiment for Determination of Signed Silicon-Carbon Coupling Constants Author(s) Blechta, Vratislav (UCHP-M) RID, ORCID, SAI
Schraml, Jan (UCHP-M) RID, ORCID, SAISource Title Magnetic Resonance in Chemistry. - : Wiley - ISSN 0749-1581
Roč. 48, č. 6 (2010), s. 464-470Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords nmr ; sqsq sequence ; sign of coupling constant Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects IAA400720706 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000278041200007 DOI 10.1002/mrc.2604 Annotation A new variant of SQ-SQ pulse sequence (SQSQh) for relative sign determination and detection of small silicon-carbon couplings over more than one-bond is presented. In the SQSQh sequence proton detection replaces carbon detection used in the original SQ-SQ pulse sequence (SQSQc). The theoretical gain in sensitivity was experimentally tested on two samples (trimelthylsiloxyethane, 1, and 1,2,4-tris(trimethylsiloxy)benzene, 2), the experimentally found gain provided by the SQSQh over the SQSQc method varied between 6 to 8. The method can be applied to linear spin systems, i.e., to systems where the silicon is coupled to the carbon in question and to any hydrogen not necessarily bonded the carbon. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2011
Number of the records: 1