The unfilled d shell of iron, as we have seen, endows certain derivatives of hemoglobin with paramagnetic properties. These form the basis for two experimental methods—electron-spin resonance and magnetic susceptibility-from which most of our knowledge concerning the low-lying states of iron in hemoglobin has been derived.
KeywordsElectron Spin Resonance Crystal Field Orbital Angular Momentum Reduce Matrix Element Paramagnetic Susceptibility
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