Accession Number : AD0412667

Title :   ELECTRON AFFINITIES OF INORGANIC RADICALS.

Descriptive Note : Final technical rept. 1 Feb 62-31 Jan 63,

Corporate Author : COLLEGE OF ADVANCED TECHNOLOGY BIRMINGHAM (ENGLAND)

Personal Author(s) : Page,F. M.

Report Date : 31 JAN 1963

Pagination or Media Count : 10

Abstract : The magnetron technique for the determination of electron affinities has been applied to the study of certain igrrganic radicals, wit; satisfactory results. The pseudohalogens, CN, OCH, SCN and SeCN have received careful ae extensive study, with varied success. Thiocyanogen (SCN)2 forms negative ions very readily, and the electron affinity is 49 kcals/mole. A comparison with the results from thiocyanic acid (HNCS) indicates that the H-N bond energy in the latter compound is 110 kcals/mole, distinctly higher than in ammonia. Cyanogen (CN)2 and hydrocyanic acid (HCN) yield values for the heat of formation of the CN(-) ion in close agreement, but the doubts recently cast ohtthe heat of formation of the CN radical prevents this being expressed as an electron affinity. HNCO appeared to form CN(-) ions while (SeCN)2 and HSeCN were too unstable to study, although much time has been devoted to their preparation. The oxides CO2 and NO2 have been examined, and as a result, a considerable amount of work has been directed to the study of the thermionic work functions of oxidized filaments. (Author)

Descriptors :   (*INORGANIC COMPOUNDS, IONS), (*IONIZATION POTENTIALS, INORGANIC COMPOUNDS), CYANIDES, CYANATES, THIOCYANATES, SELENIUM, NITROGEN COMPOUNDS, OXIDES, CARBON, FREE RADICALS, CHEMICAL BONDS, MAGNETRONS, TEST METHODS, THERMODYNAMICS, THERMIONIC EMISSION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE