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Obtaining RCOSY-type Correlations via Covariance Processing of GCOSY Spectra

by on Oct 29, 2009

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Observing small, long-range homonuclear coupling pathways in COSY or GCOSY spectra generally requires the time-consuming acquisition of spectra with large numbers of increments of the evolution ...

Observing small, long-range homonuclear coupling pathways in COSY or GCOSY spectra generally requires the time-consuming acquisition of spectra with large numbers of increments of the evolution period, t1. Covariance processing of spectra acquired with modest numbers of t1 increments, however, allows the observation of long-range coupling correlations with considerable instrument time savings. In this work results obtained from covariance processed GCOSY spectra are fully analyzed and compared to normally processed GCOSY and 80 ms zTOCSY spectra. RCOSY-type correlations are observed when remote protons both exhibit correlations to the same coupling partner. Artifact correlations are observed when protons couple to different protons that overlap or partially overlap.

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Obtaining RCOSY-type Correlations via Covariance Processing of GCOSY Spectra Obtaining RCOSY-type Correlations via Covariance Processing of GCOSY Spectra Document Transcript