Accession Number : AD0608801

Title :   THE DISSOCIATION ENERGIES OF DIATOMIC MOLECULES OF THE TRANSITION ELEMENTS. PART II. TITANIUM, CHROMIUM, MANGANESE, COBALT,

Corporate Author : ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS

Personal Author(s) : Kant,Arthur ; Strauss,Bernard H.

Report Date : OCT 1964

Pagination or Media Count : 9

Abstract : Using information derived from a combination of effusion and mass spectrometric techniques, the dissociation energy of Co2 has been calculated from the ratio of dimeric and monomeric cobalt in equilibrium with the liquid as dissociation energy (Co2) = 30 = 6 kcal. Upper limits to the dissociation energy of Ti2, Cr2, and Mn2 are also estimated as dissociation energy (Ti2) < 58 kcal; dissociation energy (Cr2) < 44 kcal; dissociation energy (Mn2) < 21 kcal. These results are correlated with the energy required to promote the atom to the lowest lying bonding or valence state of electron configuration 3d to the (n-1) power 4s. (Author)

Descriptors :   (*TITANIUM, DISSOCIATION), (*CHROMIUM, DISSOCIATION), (*MANGANESE, DISSOCIATION), (*COBALT, DISSOCIATION), TRANSITION METALS, DIATOMIC MOLECULES, VAPORS, MASS SPECTROSCOPY, THERMOCHEMISTRY, HEAT OF SUBLIMATION, HIGH TEMPERATURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE