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2D Correlation Spectra Edited by the Sign of Relative Coupling Constant
- 1.0357014 - ÚCHP 2012 RIV GB eng J - Journal Article
Blechta, Vratislav - Schraml, Jan
2D Correlation Spectra Edited by the Sign of Relative Coupling Constant.
Magnetic Resonance in Chemistry. Roč. 49, č. 3 (2011), s. 111-116. ISSN 0749-1581. E-ISSN 1097-458X
R&D Projects: GA AV ČR IAA400720706
Institutional research plan: CEZ:AV0Z40720504
Keywords : nmr * nJ(Si,C) * sign of coupling constant
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.437, year: 2011
Modifications (CSEc and CSEh) of recently published SQSQc and SQSQh pulse sequences are proposed and tested on detection of small (2 Hz) signed silicon carbon coupling constants. The new sequences increase signal intensity by simplifying the spectra. The signals are about four times stronger than in SQSQc or SQSQh spectra, achieving the sensitivity of E.COSY type experiment. The information about sign and magnitude of the coupling is preserved. CSEc and CSEh spectra for two silicon compounds are presented and compared. The two new sequences allow editing of heteronuclear correlation spectra according to the sign of the selected heteronuclear coupling constants.
Permanent Link: http://hdl.handle.net/11104/0195388
Number of the records: 1