Chemical Sciences: A Manual for CSIR-UGC National Eligibility Test for Lectureship and JRF/Exclusive correlation spectroscopy

From Wikibooks, open books for an open world
Jump to navigation Jump to search

Exclusive correlation spectroscopy (ECOSY) is an NMR correlation experiment introduced by O. W. Sørensen, Christian Griesinger, Richard R. Ernst and coworkers for the accurate measurement of small J-couplings.

The idea behind the experiment is to measure an unresolved coupling with the help of a larger coupling which is resolved in a dimension orthogonal to the small coupling. Three active nuclei are needed (SXI spin system) and the pulse sequence must be able to transfer magnetization from I to S without changing the spin state of X, otherwise the ECOSY pattern will vanish.

References[edit | edit source]

  • C. Griesinger and R. R. Ernst (1987). Frequency offset effects and their elimination in NMR rotating-frame cross-relaxation spectroscopy. J. Magn. Reson. 75, 261-271.
  • C. Griesinger, O. W. Sørensen and R. R. Ernst (1985). Two-dimensional correlation of connected NMR transitions. J. Am. Chem. Soc. 107, 6394-6396.
  • C. Griesinger, O. W. Sørensen and R. R. Ernst (1986). Correlation of connected transitions by two-dimensional NMR-spectroscopy. J. Chem. Phys. 85, 6837-6852.
  • C. Griesinger, O. W. Sørensen and R. R. Ernst (1987). Practical aspects of the E.COSY technique. Measurement of scalar spin-spin coupling constants in peptides. J. Magn. Reson. 75, 474-492.
Retrieved from "https://en.wikibooks.org/w/index.php?title=Chemical_Sciences:_A_Manual_for_CSIR-UGC_National_Eligibility_Test_for_Lectureship_and_JRF/Exclusive_correlation_spectroscopy&oldid=2669943"