Radiation chemistry of nitrogen and sulfur heterocyclics

Journal Article · Mon Oct 01 04:00:00 EDT 1973 · Radiat. Res., v. 56, no. 1, pp. 71-82

DOI:https://doi.org/10.2307/3573792· OSTI ID:4425192

Berk, S; Gisser, H

The gamma radiolysis of nitrogen and sulfur heterocyclics having one or more nitrogen or sulfur atoms in five- and six-membered rings was studied. G values are given for the major gaseous products identified by gas chromatography for the radiolyses of pyrrole, pyrazole, imidazole, 1,2,4-triazole, tetrazoic, pyrazine, pyrimidine 1,3,5-triazine, benzotriazole, thiazole, isothiazole, and thiophene. The principal gaseous product formed during the gamma -radiation of five- and six-membered nitrogen heterocyclics was hydrogen except that compounds having two adjacent nitrogen atoms in the ring produced large amounts of nitrogen and other gaseous products. When the N atoms are separated by carbon atoms, no nitrogen gas is produced and the G values for gas production are very low. Thiophene has greater stability to radiation than pyrrole as far as gas production is concerned. However, the introduction of a second heteroatom (nitrogen in the case of thiazole and isothiazole) in the five-membered ring containing sulfur (thiophene) does not change the radiosensitivity of the molecule. The nature of the free radicals formed by the irradiation of tetrazole at low doses (1 x 10/sup 18/ eV/g) was studied by ESR. Radical species of at least two types are produced. (auth)

• Research Organization: Frankford Arsenal, Philadelphia
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-000158
• OSTI ID: 4425192
• Journal Information: Radiat. Res., v. 56, no. 1, pp. 71-82, Journal Name: Radiat. Res., v. 56, no. 1, pp. 71-82; ISSN RAREA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*HETEROCYCLIC COMPOUNDS-- RADIOLYSIS
*IMIDAZOLES-- RADIOLYSIS
*ORGANIC NITROGEN COMPOUNDS-- RADIOLYSIS
*ORGANIC SULFUR COMPOUNDS-- RADIOLYSIS
*PYRAZINES-- RADIOLYSIS
*PYRAZOLES-- RADIOLYSIS
*PYRIMIDINES-- RADIOLYSIS
*PYRROLES-- RADIOLYSIS
*TETRAZOLES-- RADIOLYSIS
*THIAZOLES-- RADIOLYSIS
*THIOPHENE-- RADIOLYSIS
*TRIAZINES-- RADIOLYSIS
*TRIAZOLES-- RADIOLYSIS
ELECTRON SPIN RESONANCE
GAMMA RADIATION
N40300* --Chemistry--Radiation Chemistry
PHOTON BEAMS
RADIATION CHEMISTRY
RADICALS