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Volumn 46, Issue 11, 2008, Pages 997-1002

Multistep correlations via covariance processing of COSY/GCOSY spectra: Opportunities and artifacts

Author keywords

Artifact; COSY; Covariance processing; GCOSY; RCOSY type responses

Indexed keywords

ARTIFACT; COSY; COVARIANCE PROCESSING; GCOSY; HOMONUCLEAR COUPLINGS; IS ARTIFACTS; MULTI-STAGES; MULTISTEPS; RCOSY-TYPE RESPONSE; SPECTRA'S;

EID: 55449134407     PISSN: 07491581     EISSN: 1097458X     Source Type: Journal    
DOI: 10.1002/mrc.2260     Document Type: Article
Times cited : (6)

References (16)
  • 16
    • 85164057254 scopus 로고    scopus 로고
    • All NMR data shown were recorded using a sample of 2 mg of strychnine dissolved in ∼200 μLCDCl3 (Cambridge Isotope Laboratories) in a 3 mm NMR tube Wilmad, Data were acquired using a Varian three channel NMR spectrometer operating at a 1H observation frequency of 599.75 MHz and equipped with a 5 mm cold probe operating at an rf coil temperature of 20 K. The sample temperature was regulated at 26°C. GCOSY data for the spectrum shown in Fig. 1A were acquired as 128 x 2K points with 16 transients/t 1 increment in 30 min to insure a completely flat noise floor in the 2D spectrum. The data were processed by linear prediction to 256 points and zero-filling to 1 K points prior to the second Fourier transform. The GCOSY spectrum acquired with 1024 increments of the evolution period that provided trace B in Fig. 4 was acquired with 16 transients/t1 increment in 6 h. The 80 ms zTOCSY data used for comparison purposeswere acquired as 512 x
    • 1 increment in 3 h. The zTOCSY data were processed by linear prediction in the second frequency domain to 1024 points prior to Fourier transformation.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.