ESR and ENDOR studies of dl-prolinexHCl single crystals
By means of ESR and ENDOR spectroscopy, single crystals of dl-prolinexHCl, Cl/sup -/H/sub 2/+N(CH/sub 2/)/sub 3/C/sub ..cap alpha../HCOOH, have been studied after x irradiation at 65 K and warming to 300 K. The ESR has been shown to be the result of two stable end products. One product, Cl/sup -/(CH/sub 2/)/sub 3/C/sub ..cap alpha../HCOOH, results from cleavage of the C/sub ..cap alpha../--N bond, a reaction common to all proline-related molecules studied to date. The C/sub ..cap alpha../--N cleavage reaction is analogous to the usual deamination reaction of other amino acids. The second product, not previously observed in proline-related molecules, has been identified as the result of abstraction of the hydrogen bound to C/sub ..cap alpha../. This product, Cl/sup -/H/sub 2/+N(CH/sub 2/)/sub 3/C/sub ..cap alpha../COOH, is characterized by four ..beta..-proton couplings. Evidently, the second product results in some manner from a primary cationic product of the proline molecule. Notable about the case of dl-prolinexHCl is that the concentration of the second product is equal to, or greater than, that of the more common product.
- Research Organization:
- Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
- OSTI ID:
- 5574798
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 83:5; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
AMINES
AMINO ACIDS
AZOLES
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CRYSTALS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ENDOR
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
IONIZING RADIATIONS
MAGNETIC RESONANCE
MONOCRYSTALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROLINE
PYRROLES
PYRROLIDINES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RESONANCE
X RADIATION