2D Correlation Spectra Edited by the Sign of Relative Coupling Constant

0357014 - ÚCHP 2012 RIV GB eng J - Článek v odborném periodiku
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
Grant CEP: GA AV ČR IAA400720706
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: nmr * nJ(Si,C) * sign of coupling constant
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 1.437, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0195388