A method of increasing sensitivity in carbon-13 nuclear magnetic resonance spectroscopy via a heteronuclear Overhauser effect without loss of spin–spin coupling information

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Abstract
By applying and then removing a proton-decoupling field immediately before examining the carbon-13 n.m.r. spectrum of 50%-enriched methyl iodide, it is possible to retain complete spectral information and some of the Overhauser increase in sensitivity.