Phillip J. Hamrick

Structure of (KSO3)2NO in X‐Irradiated Single Crystals of (KSO3)2NOH

The nitrosyldisulfonate ion has been identified in x‐irradiated single crystals of potassium hydroxylaminedisulfonate. Principal values of the N14 hyperfine coupling constants are 27.5, 7.7, and 5.5 G. The principal g values are 2.0094, 2.0055, and 2.0026. Weak transitions due to hyperfine interactions with a proton from the host crystal are observed.

Relative stability of the characteristic sulfur and doublet resonances in x-irradiated native proteins as measured with ESR.

ESR measurements of the relative stability of the superimposed doublet and sulfur resonances in some x-irradiated native proteins show that the doublet resonance is less stable than the sulfur reso...

Electron Spin Resonance Study of X-Irradiated Single Crystals of Semicarbazide

Free radicals of the structure

An ESR study of the radicals in X-irradiated L-α-amino-n-butyric acid HCl containing 1.5 % L-cysteine HCl

{\rm H}_{2}{\rm N}\text{-}{\rm CONH}\dot{{\rm N}}{\rm H}

Electron Spin Resonance of X‐Irradiated Valines

have been identified from their esr spectra in x-irradiated single crystals of semicarbazide and the deuter...

X‐Irradiation Damage of Sucrose Single Crystal

After X-irradiation at room temperature, the radicals in L-alpha-amino-n-butyric acid HCl are CH3CH2CHCOOH. The beta- and alpha-hyperfine constants are typical of those found in amino acid radicals. On annealing at temperatures near 100 degrees C this carbon-centered radical in samples containing 1.5% cysteine converts to a perthiyl radical, RCH2S(1)S(2). The g-values for the perithiyl radical are 2.0024, 2.0257, and 2.0557. When the field is in the minimum g-value direction, the hyperfine splittings are 50 G for 33S(2) and 32 G for 33S(1).