A nitrogen-14 nuclear magnetic resonance study of amino-acids, peptides, and other biologically interesting molecules

Abstract

¹⁴ N Nuclear resonances have been observed in a 7·5 T magnetic resonance spectrometer. 55 Compounds of biological interest were studied in aqueous solutions of concentration ca. 200 mM, and the chemical shifts and relaxation times of the ¹⁴N resonances recorded. The chemical shifts are discussed in terms of structures, and the relaxation times in terms of nuclear quadrupole coupling constants and molecular correlation times.