High energy halogen atom reactions activated by nuclear transformations. Progress report, February 15, 1980-February 14, 1981

Technical Report · Sun Feb 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/6875171· OSTI ID:6875171

The stereochemistry of high energy /sup 18/F, /sup 34m/Cl, and /sup 76/Br substitution reactions involving enantiomeric molecules in the gas and condensed phase is studied. The gas to condensed state transition in halogen high energy chemistry, involving chlorine, bromine, and iodine activated by the (n,..gamma..) and (I.T.) processes in halomethanes, saturated and unsaturated hydrocarbons is being investigated in more detail. Special attention is given to defining the nature of the enhancement yields in the condensed phase. High energy halogen reactions in liquid and frozen aqueous solutions of organic and biomolecular solutes are studied in an attempt to learn more about these reactions. The applications of high energy chemistry techniques and theory to neutron activation analysis of biological systems are being continued. Special attention is given to developing procedures for trace molecular determinations in biological systems. The applications of hot halogen atoms as indicators of solute-solute interactions in liquid and frozen aqueous solutions of halogenated bases and nucleosides are being developed. Experiments are designed to explain the mechanisms of the radioprotection offered biomolecular solutes trapped within the frozen ice lattice. Reactions of bromine and iodine activated by isomeric transition with halogenated biomolecular solutes in liquid and frozen aqueous solutions are studied. The high energy reactions of iodine with the isomers of pentene have been studied in low pressure gaseous systems employing additives and rare gas moderators and liquid systems. Reactivity of excited complex formation and structural effects of electrophilic iodine attack on the pi-bond systems are studied.

• Research Organization: Nebraska Univ., Lincoln (USA). Dept. of Chemistry
• DOE Contract Number: AS02-76ER01617
• OSTI ID: 6875171
• Report Number(s): COO-1617-64
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400701* -- Radiochemistry & Nuclear Chemistry-- Hot-Atom Chemistry
ALKENES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE 34
CHLORINE ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY-LEVEL TRANSITIONS
FLUORINATED ALIPHATIC HYDROCARBONS
FLUORINE 18
FLUORINE ISOTOPES
HALOGENATED ALIPHATIC HYDROCARBONS
HOT ATOM CHEMISTRY
HOURS LIVING RADIOISOTOPES
HYDROCARBONS
ICE
INTERMEDIATE MASS NUCLEI
IODINATED ALIPHATIC HYDROCARBONS
IODINE 128
IODINE ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOMERIC TRANSITIONS
ISOTOPE APPLICATIONS
ISOTOPES
ISOTOPIC EXCHANGE
LABELLING
LIGHT NUCLEI
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
PENTENES
RADIOCHEMISTRY
RADIOISOTOPES
RESEARCH PROGRAMS
SECONDS LIVING RADIOISOTOPES
TRACER TECHNIQUES