Radiation Damage in Organic Crystals. II. Electron Spin Resonance of (CO₂H)CH₂CH(CO₂H) in β-Succinic Acid

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.1730955· OSTI ID:4200814

Heller, Chonon; McConnell, Harden M.

An analysis of the electron spin resonance of xirradiated single crystals of beta -succinic acid shows that: (a) the principal long-lived paramagnetic species produced by the radiation damage is (CO₂H)CH₂ CH(CO₂H); (b) the radical is oriented in the crystal lattice in nearly the same way that the parent succinic acid molecule is oriented in the undamaged lattice; (c) the strongly anisotropic hyperfine interaction due to the sigma proton is very nearly the same as that previously found for the sigma proton in the malonic acid radical, (CO₂H)CH(CO₂H). In these molecules the sigma proton is directly bonded to the carbon atom on which the odd electron is largely localized. The two methylene protons in the radical are not equivalent, and their hyperfine irteractions are nearly isotropic, and in the range 80 to 100 Mc.

• Research Organization: California Inst. of Tech., Pasadena
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-017051
• OSTI ID: 4200814
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 5 Vol. 32; ISSN JCPSA6; ISSN 0021-9606
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKENES
ANISOTROPY
BONDING
CARBON
CONFIGURATION
CRYSTALS
ELECTRONS
FREE RADICALS
INTERACTIONS
IRRADIATION
LATTICES
MAGNETISM
MALONIC ACID
METHYLENE
ORGANIC ACIDS
PROTONS
RADIATION EFFECTS
RESONANCE
SPIN
SUCCINIC ACID
X RADIATION