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SQ-SQ Experiment for Determination of Relative Signs of Small nJ(29Si,13C) Couplings in a Wide Variety of Silicon Compounds

SYSNO ASEP	0333203
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	SQ-SQ Experiment for Determination of Relative Signs of Small nJ(29Si,13C) Couplings in a Wide Variety of Silicon Compounds
Title	SQ-SQ experiment pro určení relativních znamének malých nJ(29Si,13C) kapling konstant pro širokou skupinu křemikových sloučenin
Author(s)	Blechta, Vratislav (UCHP-M)_{RID, ORCID, SAI} Schraml, Jan (UCHP-M)_{RID, ORCID, SAI}
Source Title	Magnetic Resonance in Chemistry. - : Wiley - ISSN 0749-1581 Roč. 47, č. 12 (2009), s. 1019-1023
Number of pages	5 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	DQ-ZQ experiment ; nJ(Si,C) ; signs of coupling constants
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	000272212000002
DOI	10.1002/mrc.2505
Annotation	A modification of DQ/ZQ experiment termed SQ-SQ experiment is proposed for determination of relative signs and magnitudes of coupling constants. The modification replaces the multiple quantum evolution period by two synchronously incremented single quantum periods. Similarly to DQ/ZQ experiment, the sequence requires only two coupling constants which share one nucleus, the one to be measured and a reference one. This allows application to a larger variety of molecular fragments than traditional 2D sequences producing E.COSY or TROSY pattern. The SQ-SQ experiment eliminates effects of some other couplings during t1 thus simplifying the 2D pattern and increasing signal intensity in comparison with DQ/ZQ experiment. The presented sequence is particularly designed for determination of silicon-carbon coupling constants across several bonds at natural abundance using silicon-hydrogen couplings as the sign reference.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2010

Number of the records: 1