Electron spin resonance of a γ-irradiated single crystal of carbamylcholine chloride

Abstract

Electron spin resonance spectra of a γ-irradiated carbamylcholine chloride, H₂NCOOCH₂CH₂N(CH₃)₃Cl, single crystal has been investigated at room temperature, and the spectra were found to be independent of temperature down to 130 K. The radical was proved to be —ĊHCH₂—, and the g factor and the hyperfine coupling constant of β-protons were found to be isotropic, with the values of 2.0029 and 27.6 G, respectively. The principal values of the hyperfine tensor of the α-proton were found to be A_aa= 12.0 G, A_bb= 27.6 G and A_cc= 3.9 G. The results were found to be in agreement with the α-and β-proton coupling and are discussed.