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Conformation-Dependent Ionization Energies of L-Phenylalanine
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2002
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EngineeringBiochemistryNatural SciencesChemical BondConformation-dependent Energy DifferenceHydrogen BondConformational StudyPhysical ChemistryIonization EnergiesConformation-dependent Ionization EnergiesComputational ChemistryChemistryQuantum ChemistryLowest Energy ConformersIon Structure
As much as 8 kcal mol−1 separates the ionization energies of the lowest energy conformers of L-phenylalanine. This conformation-dependent energy difference, by far the largest reported to date for any molecule, is associated with the drastic change in hydrogen bonding upon ionization (see picture).