Electron Parameagnetic Resonance of the CH2CO2(-) Radical in Irradiated Zinc Acetate Dihydrate.

An electron paramagnetic resonance study of the CH2CO2(-) radical in irradiated zinc acetate dihydrate has been made. The configuration of the radical in the crystalline lattice has been determined as nearly planar using a least squares fit. The HCH angle was found and the principal elements of the alpha-proton hyperfine tensors were calculated. Three principal values of the g tensor were selected for the best least squares fit: 2.00242, 2.00353, 2.0043. By experiment and an MO calculation the radical has been shown to be a pi-electron radical with the unpaired electron localized on the alpha-carbon. Satellite lines were observed and interpreted as possible 'spin-flip' transitions. A temperature dependence of the coupling constants for the 2 protons was discovered from spectra taken at room temperature and at 133K. Single crystals of Zn(CH2DCO2)2.2H2O were irradiated and an analysis of the spectra showed that the barrier to formation of the radical was the breaking of the C-H bond on the undamaged acetate ion.

Grantor dc:publisher

Monterey, California. Naval Postgraduate School

Year dc:date.issued

1968

Author dc:creator

• Crawford, Leslie Paul

Advisor dc:contributor.advisor

• Tolles, William M.

Statement dc:rights

• This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.

Language dc:language.iso

en_US

Handle dc:identifier.uri

https://hdl.handle.net/10945/40058

OAI identifier oai:identifier

oai:calhoun.nps.edu:10945/40058